(Pathfinder PEACH) Possibly balanced, or unfairly weaking to Sorcerers?

[eftexar]

As much as I like how pathfinder balanced most things out, yeah the wizard and sorcerer were broken before pathfinder made them moreso.

I remember seeing a well done system floating around the forums that limited spellcasters to 7th level spells. As far as per encounter goes, that might work, but per encounters are difficult to balances. Have you seen the spell shape system as well. There are some pretty good ideas there.