Let’s say Neku from TWEWY got into Smash. I wonder if they’d be allowed to use Shibuya as a stage, or if real life locations are a bit more complicated to use. Especially when other franchises/games use that location(like Persona 5)
Pipe Dream: Sonic Adventure gets a remake at the level of Fire Emblem Echoes. Something which faithful recreates the original material (even some of the more idiosyncratic elements) in a polished form while also introducing new material that not only expands on the original game but meaningfully advances the franchise as a whole.
Realistic Best Case-Scenario: A glorified port with a graphics overhaula la Majora's Mask 3D. Only minor changes, some good, some bad.
Worst-Case Scenario: Sonic Lost World in Sonic Adventure's clothes. Both story and gameplay gutted to remove anything that might be controversial.