Who cares, those slides are amazing. The action river will be a HUGE visitor favorite. Disney will have to open the pocketbook to close the gap that's about to open up. Slashing unique features like Shark Reef isn't the way forward. My wife and I each have hundreds of thousands of points and Southwest Companion passes and our kids are ready to go to Vocano Bay, we'll get more bonus points from Portofino or Hard Rock via Southwest's hotel portal. We might go out of our way to visit Avatar but don't see us hitting Disney property till Star Wars opens and that's if we don't hit up Disneyland's version first.
This will be a major hit for Universal, nit picking the immersion is just throwing a hissy fit because Disney didn't add those kind of slides and features. This park looks amazing.