Right, sorry I forgot that the Dragon ride is a refurb right? (I have never been to Universal). I guess what I am saying is that I really love the Harry Potter books and the look (not the stories) of the movies, but this doesn't really seem to be 'enough'.
Am I way off base here?
It wouldn't be enough if it was an entire theme park. In the amount of space that there is for this island, there really isn't much more that can be done. There are also five other sections in this park that are each quite large. You have all these other things:
In Marvel Super Hero Island: The Amazing Adventures of Spiderman, Doctor Doom's Fearfall, Storm Force Accelatron, Incredible Hulk Coaster
In Toon Lagoon

udley Do-Right's Ripsaw Falls,Me Ship, The Olive,Popye & Bluto's Bilge Rat Barges
In Jurrasic Park: Jurassic Park Discovery Center,Jurassic Park River Adventure,Camp Jurassic,Pteranodon Flyers
In The Lost Continent

oseidon's Fury,The Eighth Voyage of Sinbad Stunt Show
In Seuss Landing:If I Ran the Zoo,The Cat in the Hat,One Fish, Two Fish, Red Fish, Blue Fish,Caro-Suess-el,The High in the Sky Seuss Trolley Train Ride
And now in Wizarding World of Harry Potter: Dragon Challenge, The Flight of the Hippogriff, and the Forbidden Journey.
That is quite a bit for one theme park.