WarHippy, on 17 October 2014 - 11:15 AM, said:
I get that, and while I would be using the AC/20 anyway it would be nice to at least have the option to try something else without completely negating the bonuses. I'm fine with it as is, but I hope as some time goes on they touch on some of these again to allow for a little more flavor. Perhaps general weapon bonuses could have a smaller bonus so it respects the fact it is a more versatile bonus? Either way I'm pretty stoked about these quirks, but I fear my Thunderbolt 9s is going to get Flamer bonuses instead of general energy weapon bonuses.

You aren't You negate that weapons bonus. But it ain't like you are getting nerfed. And you still get the energy and toughness bonuses. but say you want the ac10, then run the 4H instead.
Or run a dual 5, and it will still be more effective than it is now, as the guns will work just like now, but the energy weapons and armor are still better.
The mech was designed, engineered and manufactured literally around the ac20. It makes sense it would be more more effective and efficient with that weapon than shoehorning a Gauss or dual UAC into it. And there are other chassis and Variant that specialize around all those weapons.