Although the potential for a clone is appealing, don't forget that Hong Kong Disneyland was, until recently, one of the most financially unprofitable Disney parks in the world, and had almost NO unique attractions (did it have ANY unique attractions on opening day?). They need this ride as a draw for their resort far more than Animal Kingdom or Magic Kingdom does. Not to mention that I think many of the rides in HKDL's current expansion have a clause that ensures they won't be duplicated for several years.
IMO, the really interesting part of this ride is all the implications. So this is what a 21st dark ride, without speed and thrills, can be like. We now know that Disney can in fact turn out an outstanding original, non-franchise ride concept (which I believe was also a stipulation of the terms with HKDL for its expansion. Can we get such an agreement for WDW attractions, please?). The fact that the ride invites a direct comparison with the 60s/70s era Haunted Mansions does an especially good job of highlighting the potential of modern attraction technologies.
It's refreshing to see that projections and AAs can be combined in ways more smoothly than on TLM, and that in many ways their combination can be superior to the use of AAs alone (something TLM didn't convince me). I was also pleased to see that the LPS trackless/system can be utilized in a more intimate ride environment, since I thought many of the rooms in Pooh (from video) looked a little cavernous to be useful in a wide variety of dark ride styles. This video shows that they are much more versatile.
So now that we know the potentials, put them to use! Don't just give us Mystic Manor, give us our Incredibles or Imagination trackless ride! Or create a Star Wars dark ride that blends AA and projections as seamlessly. Or better yet, use all of the above to create a new concept entirely.