Dont wanna be that guy, but 4v4s are not top priority balance wise.
Secondly stukas are not that strong if you were to use them, maybe the problem is that you always set up your team weapons in straight lines and clumped together. Anyways keep your opinions clean if you only play 5% of the complete game.
I don't wanna derail the thread too hard but as a 4v4 player I have to agree that 4v4 balancing isnt important.
There are simply to many factors that would require complete game/map reworks in order for it to work. Biggest example IMO is that all modes should have similar resource nodes per map. For example a 1v1 map has 8 CPs 2 Fuel 2 Muni than a 4v4 map should have similar. Just make the zones larger so it fits 8 players instead of 2. This would make 4v4 much more easy to balance along with 1v1 and make it so the mid game isnt non existent as it is now in 4v4.
As it is now there is simply too much unit density, chokepoint maps, and resources to balance 4v4 unless its completely separate from 1v1/2v2. Arti will always be OP in bigger team games because its risk is almost nonexistent when compared to 1v1 or 2v2.