P.S.: I was also thinking about Kingdom Keepers when I read the title! :)
Kingdom Keepers would not be bad!
On a totally unrelated thought, I believe Disney owns Percy Jackson (at least the publishing rights). Suprised they didn't make that movie or a ride/attraction involving that.
How about scrap 'em? I was excited about Haunted Mansion only because del Toro was involved. I haven't even heard of these other adaptations.
It's pretty ludicrous. Movies are adapted from books because there are sufficient details in the book to warrant creating a movie. Basing a movie on a five-minute theme park attraction is over-the-top. Disney really needs new ideas.
If it's a really good movie and not just following the same story as the attractions, it really doesn't matter how many ride-based movies they make.