I suggest you read Disney War by James B. Stewart for the facts on Eisner. He was woefully underqualified and got the job out of luck. The real brains behind the operation was Frank Wells who unfortunatly died in a helicoptor crash in 1994 and surprise surprise the company went to $h!t after his passing. Eisner's big claim to fame was growing out WDW for better or for worse. Animation was revied through the hardwork of Jeffrey Katzenberg, Don Hall, and many other talented individuals and the man who spearheaded all the sound ideas was Frank Wells.
I also don't see your problem with Avatar. Have you seen the movie? The World, music, and environmental themes mesh incredibly well with Animal Kingdom and considering that there may very well be life on other planets a land based on Avatar in AK would be a nice representation and reminder of that. I must assume you really hate the fact that there are Star Wars, Muppets, Indiana Jones, and Twilight Zone rides and attractions "infecting" the park. You must also dislike Hollywood Studios particularly the Great Movie Ride as it features scenes from such "out of place" franchises like ALIEN, Public Enemy, and the original Wizard of Oz from the 1930s. Your idea of doing movies based on Disney's own (mostly poor) library of films is a horrible idea. We already have too many rides based on animated films as it is.
Also Marvel, like Pixar, is part of Disney now wether you like it or not and your just going to have to live with it. I've come to accept Pixar and someday your just going to have to accept Marvel. The funny thing is they haven't even done anything with Marvel aside from putting their merchandise in stores and do a temporary cover on one of the Monorails.
You also single Iger out as being "Franchise hungry" but I can assure you Eisner was the same and any one who replaces Iger will think the same and honestly there really is nothing wrong with leveraging franchises if done correctly. I'd rather see Wall-E and Iron Man in the parks over High School MUsical and American Idol for example and I think most people would rather watch The Avengers or Tron or Pirates of the Caribbean over The Lizze Mcquire movie or Max Keebler's big move.