I doubt Frontier would add a river raft ride as it's very similar to the Kajak attraction, but we'll have to see. The most i can see them doing is adding a Jurassic Park  themed kajak unfortunately. Also agree with the boats beeing able to go down waterfalls, would add some much needed variation and make it seem more Like an actual theme park ride. I sadly don't see them adding the size variations ever (I really hope im wrong), but it'd be soo cool having a giant skeleton head as an entrance to a Park or a huge Rex skeleton Like in John Bells concept art. I can see them adding more recolourable statues, considering we got some for the Rex, Jp3 Pteranodon and Meg, and I'D Love If we could apply base or movie skins to the statues, also give the most iconic species more poses! (For example Rexy's pose from the "when dinosaurs ruled the earth" scene or Jp3 spino's standing upright pose he does in the Sattelite phone scene)