If they duplicate the GM/Chevrolet Test Track, Disney should make it more realistic by adding ignition switches that fail, causing the vehicles to shutdown in the middle and crash, to show how good GM testing really turned out to be after having to recall about 30 million cars, killing more than 100 passengers, and getting fined $900M for hiding the problem for more than a decade. They might as well add a VW diesel emissions testing ride too, where the ride car is clean in the testing lab and then pumps out toxic pollution as soon as it gets onto the track. Maybe they could do a HP ride where the guests are in a company carpool van trying to avoid getting laid-off by the CEO who's tracking them in a corporate jet.
Walt and Roy needed corporate sponsors to help finance the initial construction of Disneyland. Sponsorship hasn't been needed for Disney rides in decades and it's become an embarrassment in many cases when the sponsors do something stupid. Disney has had to remodel most of the sponsored rides in Epcot, for example, after losing Exxon, Kodak, MetLife, Nestle, and AT&T ride sponsorship. It's one thing if they change or lose a sponsor who's merely a vendor and quite another when the sponsor is part of the theme and branding of a ride.
Tomorrowland at DL needs a big renovation. Half the area is wasted with the arcade, theater, old Mission to Moon/Mars, and Innoventions/Circle spaces. Space Mountain is the only thing back there worth keeping. Autopia and the sub lagoon also take a huge amount of space for 2 rides. That space is as big as Fantasyland and Frontierland, combined. Autopia is obsolete. Go-kart tracks are available within a 10-minute drive in just about any metro area..A whole new land could be put in that area with more than 4 times the rides than currently there.
Hopefully, that's where the new Starwars themed land will be. Space Mountain could be integrated into that theme rather well.