We got back from our trip a week ago and this was overall our favorite ride. My wife and I are in our late 20s, and have been to Disney many times and are pretty big Disney fanatics. My parents are in their early 60s, and hadn't been there since the early 2000's. Two very different audience types. We all had very low expectations from reading all the luke warm / negative reviews.
Ane were thoroughly and pleasantly surprised! It didn't feel nearly as short as I expected it to. The immersion was great, and all the effects seemed to be working. It very much felt like an old school disney dark ride built in the 21st century. We rode it three times and felt like we could ride it 5 more and still notice new things. It's very much like IaSW in that way - not impressive in terms of a thrilling "ride", but such a great feeling and experience of a place unique to Disney, with a virtually unlimited amount of things to see. Could it be longer? Of course - probably should be 20% longer. Do I wish there was a story? Not really. It's a great way to experience a new place. And sometimes "story" makes a ride less repeatable. The Safari is much better IMO since they dropped the 'story'. Let each ride be it's own experience and speak for itself.
Is it worth a two hour wait? I suppose not - really nothing is in WDW if you ask me; not because it sucks but because there is nothing that has a 2 hour wait if you do a just a bit of planning. I wouldn't wait 2 hours for IaSW, 7DMT, SE, FoP, SM, etc etc.
All in all I think it's a great addition and am perfectly comfortable having this seemingly minority opinion. While FoP was awesome, and impressive, and exciting it's just not as charming or repeatable IMO. It depends on the person too... I'm the kindof person who would pay extra for the 2D version of the movie instead of 3D. The kind of person who would rather watch a model train layout for hours rather than play the newest wiz-bang video game.
If anything the most disappointing thing about this ride is that it makes the rest of the outside Pandora Land nighttime experience a little lack-luster - sort of a "less impressive" version of this ride.