Just spitballing here but let's say they do decide to move forward with a coaster. In theory, if Zelda is a 2027 project like most of us now believe, that would leave a hole for 2026. Assuming it's not an off year, I can picture a scenario where in the presser for Hollywood Drift, they announce that both versions of Supercharged will close in late 2024/Jan 2025. Then they gut the interior of the building but leave most of the queue/preshow areas in tact and have it ready for Summer 2026. Kongfrontation closed in September 8, 2002 and they completely renovated it into Mummy and opened it on May 21, 2004, so that timeline isn't too unrealistic, especially given that Supercharged has no where near the amount of sets to demolish inside.
A coaster gets slotted in this space but has just enough differences to standout from the set/effects heavy Mummy and screen-based Gringotts next door (maybe the drift part is dropped idk). I was inspired by the old Backlot Stunt Coaster and the new Uncharted ride at PortAventura for this idea. Maybe I'm crazy but I think this could work and be a much needed boost to USF, especially post EU.