Let's see here, we have Disneyland, a family park, Disney's California Adventure, a thrill park (scaled down a little by Disney, of course), what could they possibly need. A waterpark makes sense, an Animal Kingdom type park doesn't sound like it would fit, they've already used rides from MGM Studios, Epcot doesn't seem likely to be remade, and a DisneySea sounds possible. So, that leaves it down to DisneySea or a waterpark. I think waterpark is definately the choice, it doesn't matter how many other waterparks are around, look at Orlando, Disney has 3 waterparks there and there are a lot of waterparks in the surrounding area aswell.
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The Thrill Ride
http://thrillride.8k.com
*** This post was edited by Charles Woodrum on 7/10/2001. ***