Obers could easily be placed in med truck and have the LMG locked behind tech
i like that idea a lot.
To OP:
Why do you want to nerf OKM? I dont understand your reasons. If you want to point out its annoying we all agree about that, but its as annoying as other cheese in the game.
Stukas have one job and they do it pretty well. End of discussion. It doesnt need either a nerf nor a rework. Its not broken then dont fix it.
If you move rocket arty for OKM to T4 its a benefit rather a nerf since P4 is the most important rush in OKM, clearly this way you can choose mobileHQ and the swererHQ into a P4 or a Stuka if the game is team weapons heavy...
1v1 balance between OKM and allied factions is pretty equal, not stable, but equal to a point. There is no viable counter to team weapons for OKM rather than getting a wstuka.