Disney would have demanded a Hogwarts Wizard Mickey/Minnie meet and greet. It would have been a disaster and a joke. Look how star wars turned out. Just a bleep in the park. It makes sense that this is all that they offered JKR.
So, here it is in Uni's hands. It is great and yet a horrid compromise as they have defaced two islands perhaps. They are not finished yet so I will reserve judgement. If they can put JP back the way it was, I will be amazed.
For those of you that think that no one has ridden FJ yet... UC and engineers have been riding it for months.... perhaps only one machine, but you have to ride it over and over to fine tune the movements of what you see and what you do not see. SpiderMan went through these kinds of tests. The vehicle itself triggers each scene. Therefore, they only have to get one machine to react percisely, next problem is to get the next vehicle to show up and perform the same way in a timely manner. Otherwise, the ride would be stopping constantly, like the HM at WDW. Thus, if so, two tracks, one moving, and one not, for handicapped people who might need a bit more time to load makes sense. If true, then it is clever, yet expensive.