What? What's wrong with Night Owl? Fast Healer? Resistance to Magic? Or how about Resistance to Disease or Poison to help with a magister's low Fort save? Affinity with Skill can give you crazy-insane skill bonuses, and Eidetic Memory gives you bonus to every single one of your knowledge skills. Elemental and Energy resistance can help a pressed magister conserver precious hit points. Having a Spell Affinity or Signature Spell even at lower levels is very useful, and saves your higher level slots for extra fun things.
There are no bad talents, you just need to get creative!