Not really. Disney would make boatloads of cash off the movies whether the big Disneyland logo appeared at the start of the films or not. They can afford to contract with Fox to release them and keep the iconic 1977-2005 openings intact. Besides, I don't think George would have it any other way and would balk at any attempt to change them. He might not run the day to day operations of the franchise anymore but what he says about his creation will still have a lot of weight.