The lack of original attractions doesn't bother me much. But we're talking about a park that's going to have THREE count 'em THREE lands based on a specific Pixar film/series. To me that feels creatively stale. Considering the massive amount of properties that Disney created (let alone bought) you'd think they would have loads upon loads of properties they could explore for theme park attractions.
Disney just wants its parks to all be like Islands of Adventure, which itself really has no theme other than having it's lands themed to a particular franchise. This wouldn't be so bad except Disney parks are built with already a specific theme in mind. But now in the post Potter-land era, they've become too hyper-focused on shoe-horning only a certain number of their properties (even among their Pixar and princess films) into these parks regardless of whether or not they fit into the theme of the park they're in.
There's no creative challenge for the Imagineers when they're told "this film made a lot of money, make a land out of it" because they can just watch the movie or get the concept art from the movie.