I haven't been following the construction of Volcano Bay too closely, but I was able to get some good views during my stay at Cabana Bay last week and took some video. (I loved Cabana Bay Beach Resort btw, my new favorite on-site hotel!)
After seeing it from high up, the plot of land is much bigger than it looks driving by on I-4. More photos and screenshots
here.
And as for as people being disappointed already in this park... I am disappointed in them for pre-judging something so early.
Even in their original original plans drawn up for drainage permits they always had clearly visible slides in the far corner of the lot. I'm certain this is meant to be visible from I-4 and other nearby roads. And they aren't as themed as the other rides maybe so that people passing by know that it's a water park just by a glance. Just my opinion.
Original plans:
Slides by roads:
And I tell you what, this thing is gonna look amazing from Cabana Bay's pool:
You can see the volcano from all the room windows in the towers facing the pool and even from the Diner windows. Gonna be impressive when it's done!