Given the the mad proliferation of weapons and chassis we're going to see, there need to be more weapon properties besides damage, cooldown, and range. Otherwise we are going to swiftly reach the point of diminishing returns when it comes to new content. There are only so many different ways to juggle those stats and come up with weapons that are meaningfully different yet equally viable.
Making the machine gun and the LB-X into crit-seekers is a good idea. It fits with the general idea of these guns, it capitalizes on their strengths (high number of projectiles) and it's a perfect way of introducing a new sub-role for light 'Mechs with ballistic slots.
The problem is that it needs to do boosted damage to internals. Or engine crits need to be implemented. One or the other. It can't work if all it does is knock out weapons and heat sinks in a location that's a few solid hits from being destroyed anyway. It needs to be better at hurting damaged 'Mechs, ton for ton, than a medium laser. Otherwise it's useless.
And there's really no reason flamers should also occupy this niche. They already have theirs: debuffing your target by jacking up its heat. The numbers just need to be changed so that it actually makes sense to mount them and use them for that purpose.
Edited by Bleary, 27 February 2013 - 09:48 PM.