The plans are to build the park in Casa Grande which is south of Phoenix. Maybe they can build it near the Domes and incorporate that place into the design. They compare the plans to Walt Disney World in Florida and say the location has the same feel that Orlando had 50 years ago. Stay tune to see if this does happen. The project is currently under review.
If it does get built, that would be awesome. Don't forget to wear sunscreen, a hat, and carry water with you at all times while enjoying the park in Arizona!