They can make room for anything, but if they were going to go the route of making something really huge like a giga coaster then I doubt they would put it here. If they ever get a hyper/giga coaster, I'm sure they'll want to use the landscape on the other side of the park to their advantage. Plus, I don't think they'll want to spend $30 - $40 million on a giga since they seem to be looking into adding another major coaster soon after in 2020.
If they want national attention, maybe there will be some sort of gimmick involved...