Huh?! None such project is listed on https://decomp.dev/projects . I thought there was already one. All the later Mario Kart games have such projects, and on SNES even F-Zero got it (amazing).

BTW there are lot of Romhacks like just recently a fullscreen mode for single player, without half the screen covered by the map. I still need to test it out: https://www.romhacking.net/hacks/10083/ Imagine what people could do with a PC port and without limitations of the SNES.