DL's version is that long to get under the berm; hence also the actual need for the waterfalls and the HM stretching room - necessity. I'm sure if DL could re-do the ride to be shorter and put another shop in they would do it. Wait, scratch that...expand Club 33 and raise their rates I'm sure they would.It's at least 50% longer. That first section with all the skeletons is not at WDW, nor is the scene at the end with the pirate on the cannon. Of course, the WDW version was just a quick & dirty thing to satisfy all of the guests who were disappointed that there wasn't one in Orlando.
At least we have the better (and continuing to exist) Twilight Zone Tower of Terror.