I have very few doubts about how it will look. I think that part of it is something we should all be encouraged by. However, I am not as optimistic on the attractions. We have a general idea of the ride system, and I fear it's not going to be that significant a step above The Simpsons Ride. There's nothing wrong with The Simpsons Ride, but I think collectively we are looking for the first E-Ticket in 9 years to be more substantial. The one piece of concept art for the boat ride looks spectacular, but it has been classified as a C-ticket. To me that means Maelstrom level (3-4 minutes) with not many moving parts. We expect bioluminescent plants and N'Avi animatronics, but how many? What level of animatronic are we looking at? If the C-ticket is at the show scene level of Radiator Springs Racers (with foliage instead of darkness) then it will be leaning towards the D-ticket level.
Hopefully a bit more clarity/excitement is built up before then.