3* + [caster level / 3] + ability mod? (Rounded down.)
That's what I've been using for 3.5 (I use a lot of little house rules; the kinds of things that won't break anything), so it should work for Pathfinder too.
[edit] * 5 for Sorcerers. [/edit]
I agree...the biggest problem with the wizard is keeping him busy. In combat, he has a limited number of attacks. Outside of combat, he is useful only in special circumstances.Deciding how many spells to give rather than at-will is the easy part. The hard part is what to do about the problem they solve, that being finding something for the low-level wizard to do when he isn't casting one of his few spells.
Side tangent: how many of you complained about Pathfinder giving away unlimited cantrips/orisons?
Thas was my exact same thought with MM. Not a huge amount of damage, but fair with auto hit at a huge range and you can split it. Truely worthy of being a first level spell.My proposed solution is to make Magic Missile a Level 1 spell that lets you auto hit with 3 missiles that deal 1d4+1 each.