Tacticslion |
Different people, different things, but over-all lots of things, I'd imagine; part of it is the power suite/abilities (at least the codified thematic essence of it); part of it is the flavor and lore; part of it is the fluff; part of it is the 'exotic-ness'; and so on.
As for pixies in 3.5, you shouldn't, really, do that. It's not a bad start, but PF Pixies are slightly different.
That said, it can be very difficult for a GM to balance things around that particular suite of abilities. As Ambrosia notes, first of all, what is it you're looking for? What do you get out of a pixie that you don't get out of other things?
From there, you can start looking into how to deal with other stuff.
The most important part is not outshining the other members of the party in such a way as they feel less or useless due to your presence. I'd say the best way to do this is to kind-of-sort-of take over the "rogue" part, if you're working with a party.
If you're in a solo game, the considerations change entirely, and just starting with a pixie outright isn't a bad thing.
But knowing what kind of game you're in, what you're looking for (in general and specific) and all that jazz is important before balancing something so complex as a "monstrous" character like a pixie (who are, by the way, really cool).
Also, what kind of playing experience do you have, in general?