Actually Orlando used to have a Backlot Tour that was based on the Hollywood one, I did it when I was a kid, but they got rid of it in 1995. They do have a new version of the Earthquake portion of the ride at Orlando though, which is supposed to make a film trailer, so no doubt a lot better.
The Hollywood Backlot Tour is starting to show its age now though. I'd read that the 'broken bridge' is on its last legs and many parts of the tour look very dated. Instead they just try and dress different parts up to make them seem more modern, like the waves being parted is now supposed to represent King Kong. While it might be a real working Studio, you don't really see any of that, plus a lot of the stuff that was used in filming once upon a time... such as The Back to The Future and City Streets facades all burnt down in the fire a few years ago.