So I just stumbled on this. This guy worked at MercurySteam on Samus Returns and has a bunch of the models he worked on up here. Honestly, they look good enough that a Samus Returns HD should be a pretty simple job.
If I were Nintendo I’d have that lined up for the Switch and Prime 4 as a Switch 2 exclusive. Prime 2 & 3 Remastered would also be for the original Switch whenever those could be ready. Of course I’d also want the Switch 2 to be backwards compatible so people could play these remasters on the new hardware.