Rogue One's release day is just 1 month to go. I bet this Hovertank should play an important role in the story. The cargo that the Hovertank carries should be important. My guess is lightsaber crystals which power the Death Star's laser cannon.
As expected, Lego doesn't give you a full scaled model (Unless it's UCS). From movie trailers, you can see the tank is a bit longer to hold 3 orange cargo. The roof of the tank is much smaller and the front slope is bigger. The worst thing is those fake hatches. Lego uses a black 2x2 round tile to be the hole of the hatch (LOL). Those Hovertank Toopers can't stay at the positions like what we see at the trailer.
The fix is very easy because of the simple structure.