I don't find Aquatica "tacky," but no question this looks like Aquatica with a realish volcano stuck in the middle. Which is the same problem I have with Voyage of the Little Mermaid--the realistic queue clashes with the eventual ride. Simply put, candy-colored plastic slides and tiki huts requite a candy-colored volcano.
I agree I'll enjoy VB, as well. But this also undercuts any attempt to market this as some new third park. It's another water park, pure and simple. I don't expect the imeressiveness to be near either WDW park.