I was pretty disappointed with the 3.5 wild mage myself. If you really want to do the Wild Mage class justice, get yourself an old 2.0 Tome of Magic, and see if your DM would let you convert the Wild Mage within to be playable in 3.x. You wouldn't need to do a whole lot since the variable caster level mechanic is already done with the new version. Just throw in a % chance for wild surge, photocopy the surge table (don't use the one for the Rod of Wonder, it's lame) and the wild magic spells, and you're golden.