Jman5, on 13 January 2014 - 11:49 AM, said:
I am not a fan of homogenizing weapons systems to achieve balance. In fact, I strongly propose the opposite needs to be done. We need to do better at creating clear cut strengths and weaknesses to the weapon systems.
For example, we make autocannons/PPCs superior at the quick shots from cover at a distance. However, if you're in an open area, you make lasers superior. If you're close up, you make SRMs and LB10x superior. Just as the autocannon/ppc dominate in the hands in a jump sniper, the SRMs and lasers should dominate in their respective spheres of influence
In the end, variety as Jman points out (who's an extremely brave Hunchback pilot, might I add--much respect) would be better for the game as a whole. Finding that "slot" where each weapon fits is important.
Back in January, a year ago, we were close to this. About the only thing creating problems was convergence. So while I think PPCs + ACs as a combo are game-breaking, the solution should be a bit creative but still allow for weapons to have their roles.
As much as I hated Mechwarrior 4, LBX Autocannons were done right. They were BRUTAL up close. My Hellbringer loved them.

Mechwarrior 4 increased their damage by 40% up close, but at range, the spread made them very weak.
Wanderer has good suggestions, too. He's been around the series for a long time from my recollection. PPCs deconverging--or de-focusing is a good idea. Perhaps in a jump, their magnetic focus coils have trouble maintaining phase alignment due to vibrations or something.
One idea that I have toyed with is having them spread out the closer you get to your own mech... or do the opposite. Base the spread on their maximum range. At maximum range they are focused and tight, dealing damage to a single spot. When you get really close to a PPC mech, they spread damage among two or three components. It is kind of counter-intuitive as you'd think spread would be greater at range--but for game-balance sake, it'd be more with the spirit of the game and the weapon than the latter.
Autocannons I'm not sure what to do, other than perhaps force their shells to never go at the same spot as a twins would--or multiple shells for the larger caliber ones over a short time.
Ideally in the end, all of this could be wrapped up with removing pinpoint aim.