Towers again and again manage to pull out the impossible, nobody would have thought that Nemesis, Oblivion and the Smiler could be built at a park with so many restrictions. The Smiler shows you can fit lots of track and have a thrill ride with a very small footprint.
I am against building on the car park behind Galactica as I do believe the resort needs good parking and not grass parking. Depending on the size, there is no reason the staff car park behind Katanga canyon can not be used, the coaster could also interact with the rapids / RMT
Then we have coaster corner which is still not used.
There is an application in to put car parking on Field O of the meadows, so the car park behind Galactica is likely to be used for future rides. A coaster there and a new entrance would bring the theme park closer to the hotels making it more of a resort. Also it could mean the monorail is no longer required. Which means the depot could go freeing up space for development in Gloomy Wood or Forbidden Valley.