As I said, it's no different than UMD. A wizard that wants UMD needs to put some effort into charisma. A sorc that wants to maximize his spellpower needs to put some effort into int. For the longest time there were 0 useful int skills for a wizard. They added one. I don't see this as a negative in any sort of way. If I had a sorc, I'd be planning right now how to get some int items into my build.