Basically this.
Spamming maxims vs Okw was really cheesy a couple of patches ago. Usf cannot take on team weapons strats without mortar half-tracks on narrow maps. If a faction has a weakness, people will abuse the crap out of it. I am not saying we should buff mortars, but we should look at other ways of countering mgs. Soviets, ostheer, and brits have snipers or scout cars to deal with them. Usf and okw have to flank every mg.
I've been using the Pack Howitzer to great effect myself in 2vs2, it just sucks that people above 1vs1 are catching up about dual MGs being really strong out in the open, putting them in houses actually makes it easier to deal with beyond the very early game. Annoying but not impossible to deal with, the issue in some maps where smoking an MG merely forces it to move a bit further back to instapin you up close, is just covered by a second MG because some maps have such ugly funnels that are like MOBA Lanes.