As long as they don't remove/rethem Mythos or Dueling Dragons, I wouldn't mind a retheme as the land hasn't really changed since the park opened.
Super Hero Island recieved the Storm Force Acceleratron
Jurassic Park has yet to recieve a new attraction
Suess Landing has recieved the Sky Trolley
The Lost Continent has recieved the Flying Unicorn
Toon Lagoon has yet to recieve a new hard attraction.
I feel that either Jurassic Park or Toon Lagoon needs an update sooner, but an update to the Lost Continent wouldn't bother me as long as it was done well. Who knows, maybe they could turn the Sinbad theater into an enclosed building for a Harry Potter themed coaster in the style of X:/ No Way Out!