Too many empty buildings or attractions no one cares about. Personally I think they need to fix the empty buildings first. Start with Body Wars building and then move to the innovations pavilions. Once that is done they need to then address imaginations. Sea needs to a refurbish, but I think Nemo is popular enough IP that can wait for way into the future. But the tanks need serious help and more cool fish. Then add 2 rides in the countries and update all the films to be more up to date. In the end I think Future world should get 3 or 4 more rides and 1 or 2 smaller shows. The countries should get 2 rides. And refurbishments should happen to Seas and the country films.
And to Jungleskip, I think it can get an identity. The Future World should be about science and technology. I think the rides and shows should all have this concept in mind. Then you have the countries which is history and geography. I think it can still be a learning park, but still have rides and stuff that make it fun for every age. And when I talk about Science and I am talking about the earth sciences too, so they can still have the Land, Sea, etc. I think over where Test Track more physics/energy/space stuff, then in the middle technology stuff.