My thoughts on the damage being around the ak was, that the actual AK47 uses a beastly round. Especially if you get some of the older surplus ammo. The put a little more powder in them. I was also considering balance. It would be Ak damage WITH level 1 penetration. Giving it a advantage. The draw back would be longer reloads and overall less ammo. The LMG like that would be pleasantly different and offer a new style of game play without being ridiculous.
Secretly I want a Heavy Machine Gun for Support. Emphasis on heavy. Slow rate of fire. Belt Fed. High Recoil after the first shot. Alt fire tripod mount. PENETRATION !!! Oh baby. TBH I want Support to have just heavy weapons. I thought it was weird when the LAW was on the support perk (no bonuses) but in retrospect I like the idea. A heavy weapons perk to Support the team. Big Stuff. Niche Role.
*LAW
*M99 (suddap people !!

)
*AA12
*Double Barrel (sawed off version for pistol grip)
*Heavy Machine Gun
*LVL3 Full body amour (Tougher than medic amour but without discount and movement speed penalty)
Sticky bombs or pipes (demo would get the other)
Would make other shotguns similar to Lar, axe, xbow, as far as pricing. That would be a fun diverse perk to play.