Man, it's no wonder he died. That halo you have put on his head must have been too tight cutting off his circulation.
I feel the opposite. He was a creative genius, but, he did it in a different time. The stuff that is happening now, is much more technical, animation is what Pixar is, he would go broke hand animating now and it wouldn't look as realistic as the current graphics are. He wouldn't have wanted to miss out on that technology and probably would have pioneered it. He never did have a problem with third party IP's and most of his successes sans Mickey, were someone else's ideas that he Disneyized to his liking. Think, Cinderella, Snow White, Pinocchio, Peter Pan and Mary Poppins, to name a few.
The Disney company is still doing that with those newer IP's. The current crop of Disney purists somehow think that Walt invented all those characters and/or all those story lines. All he did was take a story and twist it into an 90 minute movie with his personal touches. Still an IP though. Exactly the same as they are doing with Star Wars. They now own Pixar, so it is now, in reality, Disney Animation by a different name.
We have no idea what he would have thought or done. Even if he was still alive he would be 117 years old and drooling in his oatmeal while calling everyone Roy or Lilly.