How To Train Your Dragon is a no-brainer in terms of IP's for the park, it's incredibly successful financially and it's Dreamwork's most critically acclaimed film series (even more so than Shrek). The biggest question I have is how they would implement HTTYD as a ride. A flying-theater attraction similar to Flight of Passage was the first thing that came to mind, but I don't see Universal trying to market that as a unique experience. A coaster seems like it would be a gross under-representation of the flying aspect of the franchise (unless it was similar to Dragon Gliders at Motiongate, but again, unique experiences), and while a traditional dark ride would be great, the real appeal of the series is flying on the back of a dragon.
What I'm trying to say is that I just want Universal to make Flight of Passage, but with a franchise I actually care about.