I was initially apprehensive, but I think Disney could actually make fans happy. There are countless Star Wars fans who became filmmakers because of their love for the original trilogy. Disney would have their pick of talented people to helm a new trilogy in the classic spirit of Lucas' creation. That is, if they go that route. Let's be honest. They gave an animation director carte blanche to make John Carter without much meddling. That didn't work out, but their gamble with Whedon's Avengers sure did. Then there are the claims about the Muppets set. Who knows what really went on there, but Disney revived the Muppets to a level not seen in decades.
Lucas, like Jim Henson, understands where his family will be well cared for and they're in good company with Marvel, Pixar, the Muppets, Nightmare Before Christmas, ABC, ESPN, Mickey and friends.
Now, what will Disney do with ILM? That's a really big question nobody has asked. Oh, and how Donald Duck will feel about Howard the Duck...