I did. Games designed for parties of 6 tend to expect you to have specific roles in your party because everybody can 'fit them in' and it starts to become somewhat mandatory to emphasize the difference between roles by making them necessary to be affective. *snip*
Uh, that is absolutely false. BG 1 and BG 2 were designed with 6 players in mind. My very first playthrough (back when I didn't even know what D&D was, much less the actual mechanics of THAC0, etc) I never even had a Rogue except at the beginning of BG 2. Multiple playthroughs with no magic support.
Can you do it on the absolute hardest setting? Yes, you can. You can solo the entire BG series as a Monk if you want.
The ultimate argument is that a party limit of 6 gives everyone what they want, while a limit of 4 only gives some people what they want. As far as my opinion goes, the option that gives everyone what they want is the better option, even if it requires some additional balancing like more exp for the party of 4 because there are less players to split the EXP.
