We do have a Space Mountain, but the post is about Splash Mountain.
It's a really highly discussed attraction, and has been earmarked for Roundup Village area of Frontierland before, but it seems to have gone quiet recently. I agree it's something the park needs, would really pull people back to that area of the park, and add another capacity eating ride. I'd like to see it go in with an original spin on the theme, in the spirit of our other E-Ticket crossovers, they've all been given a new twist, and Splash could easily take on a new Frontierland theme!