That would be awesome if it ever came to fruition. Is it logistically possible? Is there enough room for park expansion? Parking?As I mentioned elsewhere. I think they are taking a wait and see attitude. If StarWarsLand is a huge success they will just expand StarWarsLand into a 5th gate and keep Toy Story Land/Tower of Terror DHS as the 4th gate.
The two parks will face each other just like Disneyland and California Adventure face each other.