EXTREMELY disappointing. This was one of the most unique aspects of WDW property, and a really amazing experience for an inland water park.
Unlike the other recent closures at WDW, this attraction is neither of little value nor IMO likely to be replaced in the near future. Of course expansions are nice but in this case, how likely is expansion, really? I was under the impression that the water parks had, collectively, had ONE new addition in the past decade. It always seems that expansion of the water parks has never been on Disney's radar for resort improvements.
More than anything, I suspect that Disney simply got tired of the saltwater tank and animal upkeep, perhaps not seeing the value in providing such an expensive feature to park guests for "free." Of course I'd like to be proven wrong, but what I suspect they didn't account for is how many people are less likely to go to Typhoon Lagoon (like myself) now that one of its most unique features has been removed.