Well this and the Tram area. Honestly I hope Nintendoland basically forces them to move the tram area because it along with the hill are alot of space to use for rides/lands etc.
I know the coaster will take over the hill area near the escalator, but if they move the tram and stop using the driveway down the hill they can easily expand the Simpson ride building to house a bigger attraction and while the Q isn't small they could take the SLOP route and make it a ride you need a ticket for later in the day so they don't have to take up more of that area with a bigger Q.