I don't think Jurassic Park NEEDS anything right now because it is a somewhat dying franchise.
However, I hope that this Islands of Adventure fixer upper that they have planned- and are already starting with paint jobs and what not- includes bringing back the Triceratops Encounter. And if they don't, I hope that they eventually use that land for something, rather than keeping it blocked off forever.
Here's a thought: Why not expand Camp Jurassic and add some kiddie rides?! I know some of you might not like the idea, but you can't deny the fact that it's pretty plausible and economical. It's also a well know fact that kids LOVE dinosaurs.
Right next to camp Jurassic... how convenient...