Just wanted to add the awesome animaniacs. Indispensable proof that three is best.

On a more serious note - the balance argument is kinda bs. Nwn had 2 party members as far as I remember and I don't see many people complaining about it. On the other hand it's nwn so...

Larian's Biggest Oversight, what to do about it, and My personal review of BG3 EA
"74.85% of you stood with the Tieflings, and 25.15% of you sided with Minthara. Good outweighs evil, it seems."