DM:
I often find unusual characters are often more interesting - especially when they are underpowered, although they can't be too underpowered. We found that out in a game using characters with NPC classes, who all had a level or two of commoner - I still think it would have worked, if we hadn't used the commoner levels, but just stuck with the other NPC classes. Underpowered Characters make you think carefully about how you will use the equipment and abilities available to you.
I agree with this too, totally -- it's one of a number of reasons I took a liking to the cleric class(before 3E), early on, albeit I don't think they were under powered, per se. But, aside from the healing, the spell list always led me to think more about how to best use it, than the mage list did.
I've got that now, with the multi classed cohort I'm running in Vik's group. She's not as powerful as the single class PCs, but kind of has just the right amount to make it interesting.
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Maple, have fun -- I'd give up wifi for a few days of that! The Canadian wilderness is beautiful.