Rogues are fun. Use them.

Also, messing around without minmaxed stats is a lot funner than with them. Try choosing different spells that the normal. Choose different classes than your standard cleric/mage/fighter mix; What about them Druids? Monk? Rogue? Yea, those ones.
Quite honestly, I have a soft spot for Assassin -> Mages in BG2, and I'm wondering if a whole party consisting of Rogues with maybe a couple MCing into Wizards would work. Of course, the majority would be Rogue levels...