In a game with four core roles, I really hate that you can only have a party of four. It's so restrictive. While you're not technically forced to bring a warrior, a priest, a wizard and a rogue, D&D is obviously designed from the bottom with the intention that a party has all four roles covered. A party size of 6 means you have much more freedom to make a playthrough feel unique without doing an actual "no mages" novelty run or whatever. In BG3, unless I do special multi-role builds (which, with an apparently low level cap, sounds questionable), I can't have a playthrough with more than one of any core archetype without sacrificing another. I absolutely hate that. It has been awful in the EA so far, and I can't see it getting much better in the full game.