I find that the greatest weakness with the gear in BG3 is that 80% of the unique items are just plain worse in terms of stats or synergy than the other 20%. So you end up never using or looking at a majority of the unique items that are in the game.
A frustrating example is when you find some equipment that has a special ability connected to for example being used as a bound weapon by an eldritch knight, or by a dwarf. And then you go "that's interesting since I happen to have an eldritch knight or a dwarf", and you look closer at it and realize that even with that special bonus it is still just worse than the weapons you already have for that character.
I think that when you add a unique piece of gear into the game it should have the potential to be the best choice of gear for at least some specific build or synergy, otherwise you could just leave it out and drop something generic because all you do is sell it anyway.
