I guess if we were going from "there never was any kind of specialization" to this option, it wouldn't seem so ... bad. However, we had a good system of specialization from 3.5, and it's been turned into this. If we can ever get a comment from Jason about it, maybe he can explain the rationale behind what is going on with this School Powers stuff. It might make sense then. I still won't agree with it, but I hope at least I'll understand what he is trying to do with it. :) However, I expect I'll have to wait and read the beta to see if it even got touched.
The old system of specialization wasn't that greaat in my opionion. You had to give up whole schools of magic in return for 1 bonus spell/level. At least in this system, you can still cast every spell in the book.
I have to agree that, flavour-wise, it doesn't work to have Special Abilities based on CHA.