I'm definately going for direct channaling of Magic through your self as dangerous, so the sorcerer will use gems, and other focuses, and so will a wizard as well as preparing form the spell book. Free casting would be like trying to open a small hole in a dam, not nearly as dangerous but still dangerous. That's as far as I've gotten with the new system of magic. I'd try and get my hands on a Wheel of Time book, but I don't have the money. The idea of blocking off the magic is a cool idea, I nearly went for the weave and tapestry analogy but I didn't want to step on M:TA toes.
The rest of the world is quite different. I've thrown out all of the Normal races and introduced entirely new ones. The classes are slightly similiar to Exalted style options. They all(most all) draw from the source, unconsciously, to preform what they do. A Theives amazing capability to hide is due to magic, A druid can talk to animals because of magic use. Mechically these are just class abilities rather then spells. This whole Conscious/Unconscious magic use is what sets adventurers apart from normal people.
Wow, most of that wasn't planned, just writing makes it easier to think of what I mean to say. Neat.
Thanks everyone.