If the RMC (or GCI, Gravity Group, or whatever other) is not for 2018 (and I am safely assuming that Vortex will be converted for next season; given the recent trends), then something for the water park will be in White Water Fall's spot. And the Woodie will go in Dino's area. I could be completely wrong, but this is just what I'm thinking.
There is still slightly more land for a woodie with the removal of White Water Falls rather than the Dino's area, but either is good. There is, however, more terrain in the Dino's area. It would also open up a chance to renovate the South Gate Entrance and make it look similar to North Gate.