Can't we limit machine guns/mortar/paks to two pieces at a time per player? Only if you lose one will a new slot become free, except for captured support weapons. Would it destroy the game that much? If it were designed like this from the beginning, nobody would complain afterwards, it is quite realistic that an army does not consist only of MGs. Of course, the possibilities would be slightly limited, but balancing would be much easier. I just had an idea.
We move the light vehicles a bit backwards and the UKF get snares.
Firstly, I doubt there is no game mechanic that will allow you to do that. Apart from that i don't see mg spam very often, but when i do i just smoke them with mortar => win. Only UKF can't do that, but with sniper or artillery they can do fine i guess. As for OKW they have strong early game, but the mg spam does really hurt them and i can't imagine them winning without LV (unless you manage to pull off perfect flanks/wipes)