Okay!

I've extended the levels out to 14th, added an additional use of Double Cast at 13th level, added in two new class features: Arcano-Divine Metamagic, and Improved Arcane Disciple. I just need a capstone and I'm stuck, any suggestions?

Please let me know what you think of the two new class features as well. Arcano-Divine Metamagic is more or less the same system from the Ultimate Magus (I'm not too sure on the name, if anyone's got better suggestions I'm open to it). Improved Arcane Disciple is just building on the entry feat requirement.

Thoughts, suggestions, and critiques welcome.
-X