Just to keep it short, I am curious about something that someone familiar with SNES architecture might know, but I'm not sure if anyone would know this for certain.
Aside from the difficulty of creating such a thing, let's say there is a SNES homebrew SuperFX2 support. Would that be enough to run in 'higher' definition mode (512x448), with decent speed? Something like a typical SNES RPG, such as Final Fantasy, Dragon Quest, etc. (no 3d effects).