Imagineering is a pretty big talent pool.
I'm guessing you're meaning the concept guys, yeah?
If that's the case, I would personally risk an entire WDI career on trying to re-introduce 20,000 Leagues Under The Sea to the Magic Kingdom, using essentially the same ride technology, layout and plot, but using some of the undersea technology currently being utilised out in California for Submarine Voyage's recommisioning.
I heard a rumour from someone that if Finding Nemo - Submarine Voyage is popular enough out in California, the company would consider cloning it in WDW, which essentially opens the flood gates for a 20K return. While I doubt the authenticity of said rumour, it does make some sense. If it is proved Disneyland fans still enjoy the old-style submarine attractions, why shouldn't WDW fans?