Paid DLC for Donkey Kong is ****ing insane.
As for graphics, I was watching my wife play Expedition 33 on the steam deck and whilst the pop-in / texture load was insane and the frame rate a bit rough, on a smaller screen these things mattered a lot less and I actually thought it looked pretty good. With the game’s aesthetic, it kinda added to a sort of ‘false reality’ feel, you know?
I don’t know how well that would carry over to something like RE9, but I think stylistic choice can be more important than raw performance. Shadow of the Colossus remastered looked great at 30 fps fixed (‘cinematic mode’) - the low, film-like frame rate and lack of HUD helped make it look cinematic.