I personally don't find it very comforting that they seem to be focusing on the movies and novels for characterization rather than the original episodes. I had hoped they would be going to the roots of Trek for that.
I think it might be actually helpful, specifically about the books since at least for me those Trek novels that I have read always helped me see Kirk beyond Shatner's portrayal of him.
Its heartening for me that they are not confining themselves alone to 79 episodes. Orci has never dismissed those 79 episodes which I think he's pretty well aware of to the same degree most of us are. I know they've used Memory Alpha as a resource so certainly aired Trek has had a large bearing on whatever they scripted.
Sharr