I love the idea of the "Marvel Model" and would love to see it here. I have one concern. Canon. I hope they read and incorporate the information from the books. Those authors worked hard and worked with Lucas to keep a continuous story and I think it should be honored. Besides, as stated, it is a big Universe. ADD to it, not rewrite it. That way I will be encouraged to go back and pick up some of the novels I haven't read because "they alluded in the movie and now I want to read the whole thing!!!" And THAT will increase profits, Disney, because now I'm buying the books AND watching the movies. That's me appealing to greed, good business or whatever else. Tie it all together and laugh all the way to the bank. I'm good with that. But give us good movies and we, the fans, will reward you accordingly. Or not. Choose.
I don't know, it's not like the Avengers the hugest thing in comics movies ever, really tied much directly with any comics. I think you're mistaking what the cash cows are here. It's the merchandising and movies, followed a bit back there by TV (in service of the merchandising), as they've already conceded video games. Print media is WAY back at the end of the bus, especially EU stuff hiding in the sci-fi section that's not really going to be consumed by the majority of people.
You are correct, to some degree, but many a franchise has alienated their fan base and it never goes well. Sure, I get appealing to a broader audience and maybe books aren't as profitable, but they may want to think this one through. If you start alienating your fan base, you can't count on "new fans" taking up the slack. It won't happen. You might get them in the door once, but you won't get them back and they aren't going to buy your stupid toys. Collectors and die hards are. It's called "Jumping the Shark" and Disney did it with "Hunchback of Notre Dame". They are fully capable of screwing it up but I think they have a real opportunity here if they ADD and aren't stupid by being "smarter than everyone else." I think another reason for the sale by Lucas was that he thought he was smarter than the fans and that we'd suck down anything Lucas put out and it bit him in the ass. It can happen to Disney too. Time will tell.