I recall, when I played Temple of Elemental Evil, I went back and modded it so I could play as the villain.
she was some sort of demigod plant... thing. It was a blast.
what problems would folks foresee with having a party of monster types to play IWDee with?
I was thinking... beholder instead of sorceror, minotaur instead of barbarian, spectral knight instead of cavalier, etc.
obviously something like a beholder couldn't use weapons... but I could give it the ability to polymorph.
there are obvious things that would need to change, like swapping empty hands that could hold weapons for the scripted weapons most monsters get, adding level tables, etc. probably easiest to mod the animation and abilities for a standard player class (so it looks and behaves like a beholder, but could gain levels and learn new spells, etc)
but are there unobvious problems people can think of?