I think you're making two mistakes here. First is bringing back the overpowered sniper and making it even stronger if I understood correctly (having the combo work until 2 helmets, wtf?). A two shot combo will make everyone even remotely good with the sniper use it as the only weapon in all maps that are not awfully bad for sniper and you have your old 2-gun-society back, especially when improving the SMG's damage while making the AR weaker (SMG with more recoil will not hurt anyone, stronger AR recoil most likely will).
The second is the shotgun with hitzones. I'm assuming you mean hitzones on the body, which is not a bad idea in general, but should then apply to all guns. What about you keep everything as is but make "hitzones" depending on distance to the object, or rather just make the damage attenuate with an f² function? That is probably not too hard to do, but I don't know all the code :)
Btw. I think you should keep all current properties of the nades, except maybe make it a bit stronger (say 15% more radius, 10% more damage), so people will feel its power AND use it wisely but don't need 100% precision to take out a camper.
The second is the shotgun with hitzones. I'm assuming you mean hitzones on the body, which is not a bad idea in general, but should then apply to all guns. What about you keep everything as is but make "hitzones" depending on distance to the object, or rather just make the damage attenuate with an f² function? That is probably not too hard to do, but I don't know all the code :)
Btw. I think you should keep all current properties of the nades, except maybe make it a bit stronger (say 15% more radius, 10% more damage), so people will feel its power AND use it wisely but don't need 100% precision to take out a camper.