Community

I've always like the 3.x Psionics rules (Or if you wanna keep the argument to arcane magic, the 3.5 Spell Point rules from Unearthed Arcana). That way you choose how much ramping you put into your spells, saving the big stuff for when you need it. Combo that with the PF/DDN system for Vancian magic with At Will Cantrips to handle your round-by-round necessities, and the 3.5 UA Incantations (or 4e/DDN Rituals) system for your out-of-combat spellcasting, and you could assemble a flavorful spellcasting system that lets you do a little whenever, some a lot, go bold when you need to, and still feel like a wizard once combat and said and done and you need a little magical something (like teleporting) .

(Then again, my opinion is subject to be wrong. Afterall, I like 3.5 Incarnum.)