Maybe just lower the victory bonus, and increase the top team bonus instead…
I mean, the idea of the victory bonus is that you get promoted for winning the game, which means that you tried to play the objective. And playing the objective and trying to win at all costs should be the focus of the game. Thus it makes sense to “promote” the winning team, so that every player rly rly wants to get that sweet XP boost.
Now because the Berlin campaign is an unbalanced shit show, literally the only reason why we even talk about this is because of “unbalanced” gameplay.
So fixing the root of the problem should also fix the issue you guys are talking about.