These are the hourly capacities for the attractions that are either rumored to be, or theoretically on the chopping block for any sort of update..
Buzz Lightyear - 1,700
Star Tours - 1,450
Autopia - 2,800
Magic Eye Theater - 2,300
Nemo Subs - 850
Astro Orbiter - 650
Tron is apparently 3,500. If a similar version of Tron is coming with a similar hourly capacity, that means 6,250 worth of hourly capacity will have been lost in Tomorrowland. This number would just be in order to match the land’s capacity to what it currently is. I wonder how much this would be prioritized when pursuing this update.