It looks a lot more like Gundam now, with the Earth government ruling over colonies within our solar system with an iron fist. There are methods of FTL travel called Jump Rings that are basically huge space stations in orbit around a planet that can safely and accurately launch ships at FTL speeds to other Jump Rings to re-enter "normal" space, and this is how we get around in our solar system. But there's a catch, in that a spaceship can only use the system if it has both a ring to enter and a ring to jump to. This limits our FTL travelling ability to only locations we've already built a Jump Ring nearby.
There are humanoid mecha, but they're very Front Mission / Armored Trooper VOTOMS in style. They don't get larger than 30 feet tall and not much heavier than 60 tons, but they are capable of highly agile humanoid movement even without a direct link to the pilot's nervous system. (More on that later). Many models have wheels or tracks in the feet for rapid movement, and lighter models can even feature jump jets, but these consume a large amount of power and thus are sparingly used. Generally speaking, they are incapable of sustained, self-powered flight, except for a few ultra-lightweight specialist models used for infantry support during special ops. I'm also avoiding bright colors for the most part.
There are also mecha for space combat, which are very spindly and covered in thrusters and fuel tanks for zero-G combat. Their armor is very thin, often just simple plates that reflects light of specific ranges of wavelengths and intensities to defect hits from laser weapons. They are equipped with lightweight laser weapons to blind sensors and fry delicate components of enemy mechs and spaceships, and use extremely-rapid-fire, small-caliber machine guns and shotguns to rip the delicate structures of spacecraft to pieces. For longer-range combat, higher-powered lasers and missiles with shotgun shell tips are the norm.
I've started working on a story based on the universe too, which takes a few pages from The 08TH MS Team because dammit, that anime is too good to not take a little inspiration from.
It's the story of two cyborg super-pilots, a man and a woman aged 25, who were friends and lovers during their teens who are now on the opposite sides of a brutal civil war between the iron-fisted Earth government and it's Mars colonies.
The female lead is Aldvia Noasis, an incredibly talented but deeply emotionally traumatized and cold mecha pilot in the rebel force. (Why is she like that? All her friends and family, along with millions of others, died when the Earth military decided to send a Mars colony crashing down to the surface in response to mass riots).
The male lead is Jake Balowikz, a more innocent-minded person who grew up in a poor family on Earth, but joined the Earth military for what he thought were the right reasons (putting an end to the violence between Earth and its colonies with as few civilian deaths as possible). Life on Earth is almost as hard as Mars, with resources and living space very scarce. But when resources from the colonies started flowing in, the economy improved and people began living normal, peaceful lives again. When the colonies began revolting - and nobody knew why, as the Earth government repressed that information - the public began to resent the colonists as they viewed them as the reason for society degrading once more.
Both grew up on Earth until they were 16 years old, at which point Aldvia's family moved to a Mars colony to find work and a better life. They were unable to communicate for the next 9 years, but each kept a memento from their childhoods together - a toy called a TappyTalk which is basically a two-way texting and talking device, that beeps when the other user is nearby and has a range of a few miles.
Both lead characters and their mecha are equipped with a experimental new control system called Lynksis, which uses nanorobot implants and an artificially enhanced nervous system to allow the pilot to link their mind and nervous system with their mech directly. The result is a superhuman increase in pilot performance, including perception, reaction time, precision of movement, and the ability to analyze information and react with the speed of a computer. Outside of the cockpit, the nanorobots embedded in the body of a Lynksis-equipped human grant them increased speed, strength, a faster healing factor, a less acute sense of pain, and other benefits similar to what they'd have in their mech - just less so.
However, Lynksis isn't without serious problems. The entire reason only the main characters and a very few others have it is because to be physically compatible with Lynksis requires you have compatible genes and physiology. Even then, the chances of surving the process of having Lynksis integrated into your body is low. Damage or degradation to the nervous system if the Lynksis is not properly maintained will cause the nanorobots in your body to deactivate, stripping you of your superhuman ability. If left this way, it eventually leads to paralysis, organ failure and death.
So the story is about these two superhuman ex-lovers, who are ace pilots on opposite sides of a brutal war between two different worlds, who haven't seen one another in years yet still have strong emotional bonds to one another, yet see the world through two entirely different views. One is willing to do whatever it takes to free her world and prevent another colony drop.
The other wants to end the war with as few people dying as possible so life on Earth can return to how things were, and to take Aldvia home with him.
After re-discovering each other on the battlefield after shooting one other down, they begin to see their war from each other's eyes, and from the eyes of other characters from each side, yet both feel they have to continue fighting for what <em>they</em> think is right - as right and wrong are opinions, which are subject to change. Battles rage, hearts break, good and bad people die, **** goes down and one of these two star-crossed lovers must ultimately decide who's side they would rather be on, before they wind up killing each other in a bloody war which they are just an insignificant piece of.
Or, that's how it goes. Which reminds me, I need to start drawing again so I can make this a visual novel. I used to kick ass at drawing, but I need to dust off my talent.
But yeah. That's the gist.