I've just had a quick look on Google Earth at how much space Wild Mouse takes up, and it takes up round 700 square metres, and Trauma towers takes up around 500 square metres. Is there any kind of attraction that can fill any of those spots? If they removed Alice in Wonderland, that would give them a space of around 2,100 square metres, an area that could house a Mack spinner slightly larger than Turbulence. I know this wont come for a while, but I put money on it that Alice in Wonderland will be the next ride on the chopping block.
In the Wild Mouse's space, I could see a swinging ride of some kind in 2020, maybe an Intamin gyro? I've looked on GE again, and there is definitely for a Maelstrom-sized pendulum ride to fit there, and enough room for the arm to swing either side with a decent amount of clearance.