Well this is unfortunate. As someone who'd visited AA/Visionland back in 1999 and 2005, it's sad to see almost all of their non-water stuff (aside from Rampage, an Enterprise, 2 kiddy rides, and a Space Shot tower) offered up like this.
I can't say I was a big fan of the park or its overall ride offerings (aside from Rampage, which was incredible in 99 and still quite good but notably rougher in 05). However, it would still be sad to see what is technically my home park become just a water park, although that had always been its biggest local draw and where most of the additions and attention over the years were focused.
At least the waterpark stuff is decent for a park of their size and scope, but not really enough for a standalone experience IMO. Even the park-based water stuff was quite poor, with dull layouts and very little wetness involved (at least for the flume and rapids ride, I can't speak for the splashdown put in last year; it's probably better for getting wet).
And yes, Rampage is primarily built on a hillside, so moving it elsewhere would probably be very difficult.