I feel like you aren't taking upgrades into account. LMG's and Panzershreks are markedly stronger than any allied upgrades. J. Lee has mentioned doing work on veterancy more than once on stream so "soon."
or maybe u did not know all lmgs on infy are all almost same,bars cost less,thompson and ppsh are great now after buff,panzershreck is costly,bazooka is versatile and can be picked by any infy and is cheaper than shrecks...why dont you take that into account or what about free vehicle crew repairs..without any handicap to the faction..??