So what's new *****cat? What is on the cards for DLP past Stitch Live and ToT? As ToT or Crush have shown, these rides take ages to build and there are no signs of anything apart from Woody's Roundup. Oh dear!
Looking at GoogleEarth i would think the best spot for sticking something like Splash is by extending the path past Indy and looping it around to the front of Pirates and then building the mountain in that corner. There's a space about three times the size of Indy in that corner behind Indy and Pirates and could go bigger if you allowed the train to go through the middle.
The problem would be viewing vantages from the different points on the mountain as you would get a pretty dissapointing view of the roof and backside of pirates from up there.