If they do, I hope they put in difficulty scaling.
I don’t know if they will add 6player functionality. They haven’t done so since BG2, as far as I remember. NWN I think it was 3-4 that became the standard, and I think it was just because of difficulty scaling is easier to do with 3-4 party members than 6. I personally the like ability of 5, because let’s be honest it takes 4 to make a well rounded party, but then I need a 5th slot to slot in the character I currently need to do a companion quest for, that I haven’t bothered to equip or spec out, or to temp replace Astarion cuz I have to do quests in the swamp....and his “Running water still hurts me so I won’t even attempt to jump over it” mechanic is annoying as hell.