I would change the heat system a little, thus vastly improving balance, improving skillcurves, nerfing poptarting and creating a better game experience. I'd prefer a system that goes away form alphastriking and with it only aiming once every 4-5 seconds.
Here is how:
Get the heat thereshold away from heatsinks, give the thereshold to mechs depending on role and size (e.g.: awesome is energy boat, so give it 25, catapult as LRM heavy mech only 15, but the k2 as ppc variant gets 20...).
Then get the heatsinks dissiapating a lot more then now, maybe back to their true value from the TT. So people would have to stagger shot which requires a lot more skill now. High heat weapons would also be less crappy then they are now, because the ratio of heatsinks vs ammo for more salvos will not be as bad as it is now. The math right now is roughly 3 times the heat you produce as heatsinks to get neutral (which is not even neccessary, but still means you need 3 times the amount of HS you're supposed to).
Lets compare this on two weapons which are very close to each other... damage bracket and range. But one is ballistic with low heat and one is high heat energy.
PPC: 10 damage 9 heat, you end up with roughly 27 heatsinks. weapon tonnage is 7. => total 34.
AC10: 10 damage 3 heat, you need 12 tons for the ac, lets say 2 tons for ammo (30 rounds). Now we're up to 23 total tonnage.
As stated, you don't need to get heat neutral, so how about cutting 1/3 of heatsinks each? Makes 18 vs 6. Still 12 tons difference. Cutting more? Enjoy getting hit by the AC10 during your shutdown. Even if you consider projectile speed etc... it's still not worth ~10 tons difference.
As long as this basic mechanic remains like this, the weapons can hardly be balanced.
Lets look at this from TT perspective
7 tons 10 dmg 10 heat => 17 tons
12 tons 10 dmg 3 heat (+2 tons ammo) => 17 tons
uh-oh... who would have thought about that?
TT balance was far from perfect, but it was a lot better then this here is. Especially if you only consider weapons its a lot better then what we have. I just bring it up as example. They could also go and drop all weapons to 66% or even 50% of the current heat... who cares if the heat values are fractional - display a dps counter on the weapon info in the mechlab, the conputer can calculate it ingame just as well as natural numbers.
This would also get us away from poptarting, which favours firing and cooling down for a long time - poptarting that is disliked and even hated by a lot of people. But with the balance of the game right now its one of the few viable options.
The overheat on the scale could then cause effects like slower movement, worse aiming (the aiming circle expands and hits somewhere in the circle, which grows bigger with more overheat), shutdowns, chance to ammo explosions and internal damage etc.
Edited by Lyteros, 27 March 2013 - 10:57 PM.