Concentration is definitely a problem in the game. It may be one in D&D (I don't know) but it's really one in BG3 according to me.
I have to admit you may have a good point. I realized I mostly just stopped using spells that require any kind of concentration because it is too easy to have it knocked off. Something really egregious is a spell like Mirror Image getting knocked off due to something like this.
Maybe a good rule of thumb is if the damage is homebrew then it doesn't affect concentration? I mean the biggest problem to me was the inclusion of all these spells that suddenly require concentration. I guess they don't want mages stacking certain spells anymore.
