I think certain moves across the resort read to me a bit like the initial steps in a game of chess; repositioning certain pieces across the board before a big play.
1. A full Monsters Inc. land, with a potential venue for a show.
2. A new (hopefully) high-capacity and more energy/cost-efficient attraction where kids get to drive around in a car in Frontierland.
3. Notable updates and improvements to smaller offerings across Tomorrowland like Buzz and Carousel of Progress.
I wouldn't be surprised to see the Speedway leave after the Cars expansion opens up. It's a whole lot of space over there right on the border of Fantasyland, and that leads all the way back to Tron and the Railroad.
A Space Mountain retrack also seems inevitable, and is my best guess for what they put under the knife after BTMR reopens.
All together, this list is potentially sizable and resembles the frog-in-a-pot and unadvertised "New Frontierland" improvements we've seen this decade.
1. Space Ranger Spin tech and visual upgrade
2. Carousel of Progress update w/ new scenes
3. Tron Coaster
4. Gradual land aesthetic updates; bringing it closer to the OG Googie-style
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5. Space Mountain retrack
6. New Developments in the Speedway space
7. New Development for Laugh Floor space
8. New Devlopment for Alien Encounter space
I don't think anything here is out of the question. We'll just have to see what actually comes to pass.