The integration of the screens was pretty poor to me. They just kinda... end at the floor. Plus- the floor itself seemed super weirdly reflective to me, so it was painfully obvious that it was just a giant screen. Moving props would be nice, too. Maybe a better motion base on the vehicle. It should be "reacting" to the action on the screen.
It's honestly an attraction with a lot of potential, and one that I'm not terribly upset over being in Epcot, but it could definitely use some tweaking.
EDIT: I should rephrase - I'm only not terribly upset over this coming to Epcot if Impressions is staying. I apologize, as I'm sure this has been discussed ad nauseam, but is the film sticking around? If the educational elements are being removed from the pavilion completely, ala FEA, then I am less okay with this.