My wish list would include the following: Springdale, UT (Zion W. Gateway); Bryce Canyon City (Bryce gateway); Jacob Lake (Grand Canyon N. Rim gateway); Ash Fork, Seligman, or Williams, AZ (connector between Kingman and turnoff to G.C.N.P S. Rim from west for I-40); Tusayan, AZ (Grand Canyon S. Rim S. gateway); Cameron, AZ (Grand Canyon S. Rim E. gateway, connects to Page, Kayenta and Jacob Lake); Torrey, UT (Capitol Reef W. gateway); Hanksville, UT (Connector to Blanding and Torrey, E. gateway to Capitol Reef); Kayenta, AZ (Monument Valley S. gateway); Cortez, CO (W. gateway to Mesa Verde, connects to Moab, Blanding, Kayenta, Farmington). I would also like SCs in Escalante and/or Boulder, UT, to provide access to the southern part of Capitol Reef, Grand Staircase - Escalante N.M. etc. It also wouldn't hurt to add one along U.S 89 in say Panguitch or Carmel Junction (E. Gateway to Zion, connector to Richfield etc), and another in Cedar City to provide better roundtrip access to Cedar Breaks N.M. from the west.
I've done most of these trips in an ICE, e.g. Arches to Canyonlands to Natural Bridges to Capitol Reef to Bryce to Zion, and also Arches to Zion via I-70/U.S. 89, plus Farmington - Bluff - Monument Valley - Grand Canyon S. Rim - California, so it's highly desirable for Tesla to make it possible to visit all the national parks and monuments in the area, at least the major ones for starters.