I wrote about this in another thread, but considering the discussion here...
RnRC was built during a "budget cutting" era, and it shows. Everything works great until you enter the "alley," at which point you move from something that feels real to an obvious "this is a roller coaster train pretending to be a car" without much room for suspension of disbelief - which might work fine at an amusement park, but less so in a theme park.* And then, of course, the gravity building's theming is nothing but cartoon-style, two-dimensional "cutouts" - something that you would expect to see at an amusement park, not a Disney theme park.
I'm usually opposed to re-themes, but in this case, it could make this a much more compelling experience. My only concern is their doing something that messes up the aesthetics of the area in front of ToT (the current RnRC mercifully doesn't call attention to itself from ToT, instead being set back and having an appropriately-styled entrance archway).
*There are exceptions to the need for more "believability" when it's a fantasy-style attraction (e.g., classic Fantasyland rides and Space Mountain), but RNR "takes itself seriously" in the setup and then fails to deliver on that.
