Alright, enough of the: This side would do this or that. Let's focus on the Clan point of view. Ignoring warnings from Clan Wolf via Wolf's Dragoons reports that the Inner Sphere was NOT a bunch of cavemen, that they were redeveloping star league era tech, and though split, the houses had realatively steady borders. The Clan ASSUMED many things based on what they saw of the inner sphere when they left, and what happened when they arrived and settled in the systems around Strana Mechty. When they arrived at what became their homeworld - this righteous legion of warriors leaving the inner sphere to keep themselves from being used to destroy everything, they realized they had way too many warriors and not enough farmers, butchers, mechanics, teachers, whatever. The Kerenskys disarmed most of the warriors and gave them new jobs so the society could function. What happens? The kill each other, because bored warriors don't know what else to do, and they brought their inner sphere prejudices with them. So Lyrans fought Kuritans and so on. Nicholas Kerensky (Alexander's kid) has a vision, grabs a loyal cohort of warriors, and kicks everyone's butts and tells them to get back to work. He divides them into clans, where he mixes and matches people so all the ethnicities are mixed up and rendered irrelevant, this includes taking away all the warrior's last names. The only last names that exist are those names of the people who fought with Kerensky to reunite his people, and he says 25 people (he likes multiples of 5) can EARN each last name (bloodnames) if they can prove their heritage back to these warriors. This is typically proven easily as warriors are born via iron wombs of already mated bloodnamed genestock.
Anyway, they build this new utopia, based on a caste system with warriors on top. They are the few, the elite, and the whole society is geared toward 1. supporting the warriors. 2. learning and building new technologies/sciences and 3. letting society prosper through trade. In a strange honor system that includes bidding, commanders bid the lowest number of troops against other commanders to accomplish their objective - essentially garaunteeing the least amount of total damage done. The idea is to preserve life by not having everyone go into all-out war to solve their differences. Trials replace warfare, where if one clan has a beef with, or wants something from another, they challenge the other and then they have what is sort of the equivelant of a jousting contest of their best mechwarriors against each other to prove right through might. There is an elected clan counsel. The Ilkhan (I L K han) is the elected leader in times when the clans must unite.
BTW, old people, and old warriors are mostly thrown to the wind. 40 is old to pilot a battlemech. 45 is ancient. Even though they have great health, they consider 20-35, 15 years, a typical amount of time that a person is in their prime and useful to the war machine. (Other castes live to old age.) So, 300 years pass. That's 20 generations of forgetting the past and living in their utopian NOW. All they know of the inner sphere is pre-exodus stuff. (The clans, then the Star League Defense Force, left the inner sphere = the Exodus)
They assume that the inner sphere is on the edge of total self-destruction. The only contact they have is spying on periphery planets, which are basically the wild-west, lawless frontier of known space.
The Clans are politically divided by the 31st Century. Clan Wolf gets smart and sends spies in (Wolf's Dragoons) to check out what the inner sphere is up to by fighting for all the houses as a merc unit. But the Dragoons are kind of left hanging out to dry and their reports are mostly disregarded as they contradict what the home-bound clanners see in the periphery. The truth is, the Inner Sphere is raising to the hieghts of technology to match the once Utopian Star League (One-World/Unite Nations Order), and though no one can agree on which noble house has legitimate claim to the thrown of the Star League, the 5 great houses (plus the Swedes in the Galactic North) are mostly not killing each other. Two of the larger houses have even formed one big house. (Steiner and Davion married into each other's families and created the Federated Commonwealth out of their two states.)
The Crusader political faction in the Clans said, yeah, right. We are the rightful inheritors of Terra/Earth and the throne. Our society is great, and the inner sphere just doesn't realize it yet, but they will when we go bring on the pain, and forcefully convert them to our way of life. The Wardens saw it as their job to safegaurd humanity and knowledge in general, and if the Inner Sphere WASN'T going to implode, they should stay out of there. The Crusaders (dumb kids - remember, 35 is old/used up and 20 is when mechwarriors are at their peak, and they know better - yeah right....) think they know better and outnumber/outvote the rest of the clans, choose and IlKhan (war-chief) and go off to prove it.
The clan that reaches Earth and takes it over first, wins the race, and the ilKhan is forever on supposed to be from that clan. Then they would work to enlighten the inner sphere by bringing them all their cool technology, culture, and restore the star league in the clan's image.
SO.... What happens if the Clans take Terra?
They put their plan into effect. However, the clans are full of dimwitted young people (20 year old neo-fascists) who think they know how 200 planets who have previously lived under a stereotypical Japanese culture (Kurita) should live. With or without infighting, the clans could not OCCUPY the whole inner sphere. They would be spread thin, even if they did knock out all the House capitols, and the majority of the people would rise up, actively or passively, to make life difficult for the clanners. Not only that, but once the clanners get out of their battlemechs and see that there are a variety of equally decent ways to live, they will question themselves.
So, yeah, it will be a civil war in the inner sphere and in the end, everyone would lose. The Houses and the Clans probably would set back human progress by a hundred years or more, and in the end, people would adopt their old or new culture and form bigger governments until each new empire hit it's max size and the inner sphere would be reborn.
The Wardens, btw, typically were kinder to the inner sphere people they conquered. The Wardens saw themselves as protectors, and the Crusaders were conquerers. True, they were more alike than different, but their attitudes toward some subjects differed. (Like the Republicrats and Demuplicans. When placed on the world stage of poltical platforms, they are far more similar than they ever would admit to, but they are all Americans who basically value the same things - just differ on how things should be set up and worked out. Too bad Americans are idiots. - and yes, I am proud to be an American! Wave the Stars and Bars, I mean stars and stripes forever! Blah, blah, blah...)
But, back to the OP. To summarize: This has all happened before, and it will all happen again until we all agree that the force is with us, and we should live long and prosper.
(Things to support my arguments.)
1. Smoke Jaguar, most aggressive and short sighted clan - who I love most - was ripped to shreds by a reborn Star League Defense Force because they were considered the scariest clan. (F*** YEAH! Take that, stravag inbreeds...)
2. Clan Wolf made friends with the people they conquered. Rasalhague fell without a shot being fired. Why? Because both the Vikings and the Wolves valued each other's lives over politics.
3. Jade Falcon. the tradition keepers, and Crusaders had a tough time. They are smart, but are bogged down by their ignorance of how to deal with people not of their uber-reich. They do kick butt when they need to, but have terrible people skills and so they trip up on domestic issues.
4. Clan Ghost Bear, the other Wardens of the original four clans, realized they didn't know what they were doing and let the Rasalhague basically self-govern, with them holding the power over the military. The Vikings serve under a pretty free thinking self-government, and the Ghost Bear have become rather passive. They pushed to their REASONABLE limit and consolodated.
5. Nova Cat, a latecomer in the invasion, actually MERGES with the Draconis Combine, as a minority group, and they join the Star League Defense Force when the Star League is reborn. They are Wardens, and they stick to their POV that they are there to protect the people, not to conquer.
6. Living in the Inner Sphere was too much for Clan Wolf and they got into a heated family argument, with the Jade Falcons butted into, saying that Clan Wolf messed up the invasion by being too forward thinking, practical, and benevolent. So, they fought and Clan Wolf is now two Clans (3067ish).
In a hundred years, the clans would be looked at as a large group of violent immigrants who eventually realized everyone was really human, trueborn or not, and remain as a bunch of really proud ethnic minorities.
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I do agree that it would be interesting if MWO was bound by canon only up to the beginning of play, and we could play out the clan wars, and succession wars, as player-controlled factions, but with balances thrown in (mostly supply lines, planetary complicity/rebellion levels, etc.) and see how the Inner Sphere would look after 5 years of the clan invasion. If the further you went from your power base, the harder it was to field and mantain troops, the map would be constanty changing, but never totally dominated by one faction, even if they outnumbered others player-wise.
But that's a topic for another post. (RE: project
Genesis which is an example of a partially complete system like the one I'm talking about.)
Okay, steps down, puts soap box back in the pickup, and heads on to the next town.....