Besides that, I don't mind if the party size is increased, though I think it would just end up the same way BG1-2 and Icewind Dale ended up - basic 1 melee, wizard, thief and cleric + whoever you actually really like.
So an excellent degree of variety while still having room to experiment with something more exotic? And that's a bad thing... because?
I actually explained it, but you seem to have your opinion that you keep telling everyone who disagrees. I'm not starting an arguement here, I offered just a different perspective that you don't care about - fine by me.