I've just returned home from Orlando and finally got a chance to ride Gringotts, after four hours of breakdowns no less!!
First impressions - the theming is utterly outstanding, I went single rider so missed a good deal of the queue, but from what I saw it was amazing and the area itself is probably the best theme park area I've ever been in. It's the first time I've felt like I'm not in a theme park but a real city.
As for the ride... I enjoyed it, but wasn't blown away. I'm attributing this partially to when I rode, it was day three after the grand opening and had been having a great deal of problems all morning. By the time I got off the ride they had already closed the entrance again so I'm getting the impression I didn't experience the ride at its optimum performance.
From what I did see though the coaster section was fun, the trick track and launch at the end took me by surprise and some of the sets were genuinely breathtaking. The problem for me was the previously mentioned use of screens which, in my opinion, didn't fully blend in with the physical surroundings 100%. Saying that though 3D and myself have a mixed relationship... Spidey and Transformers are fine but stuff like Philharmagic and Captain Eo sometimes don't work, probably because of the slight weakness in my left eye. Maybe if I rode again it would be better but on my first ride I didn't feel the 3D worked as well as on their other rides.
Finally I thought the cars movements when the ride was moving great, it's impressive to think they're essentially sending a full motion platform along coaster track, but the rides pacing felt off to me. You go from sections of full blown coaster to stopping still in front of a screen with no simulator movement in a matter of seconds and I found this kind of jarring. At points it was if you were just moving through sets from one movie screen to another with little simulated movement, unlike Transformers which I feel is must faster paced.
Maybe I'm being a tad harsh, but I'm kind of sad to say my first thought as we hit the final brakes was the dreaded "was that it??". Like I said, they were having problems for most of the day and I didn't experience the full queue, but from my experience I just didn't quite feel wowed by it in the way I did on my first time riding Spiderman. For now I'd say FJ is better but this has potential once they get over the problems you would expect from such a new ride.
Bear in mind that FJ left me disappointed on my first ride too, so maybe if I get to ride again in the future my opinion will change, but for now, a solid 7/10. Great potential but my first experience just fell slightly short.