2v2 is hard to balance, 3v3 and 4v4 is just impossible to balance
Okay that is fine, then we don't have to try at all?
A simple but obvious example: In the vanilla version of the game there was an Ostheer commander with a LKW that you could drive on a ressource point to get more income out of it for the whole team. So if you took this commander you and your mates could build the normal caches and in addition you drove the LKW on ressource points. This lead to a huge ressource advantage in the lategame of the Ostheer vs Soviet matchup at 3vs3 and 4vs4 while it was only a small advantage in 2vs2. Obviously it was no problem at all in 1vs1.
The simple patch solution that came shortly before OKW/USF hit the field was only letting the player gain the ressources who build the LKW. Pretty simple but ingenious, no influence at 1vs1 matchup but a huge impact on balance of other modes in the right direction.
This example shows clearly that the sentence "3v3 and 4v4 is just impossible to balance" is just a lazy excuse for not beeing willing to invest anything to make this game better for all players in all game modes. I don't claim this game will be balanced at 4vs4 ever, but yes it could be way better than it is today. There are solutions, some are simple, some need thinking out of the box.