With allowing dolphin emulator to be used, I think a neat idea could be a category extension of the game at 150% speed, or 90 fps.

if you really want, you can try it by yourself, but since there arent many runner on emulator (4 in any%, 2 or 1 in other 3 Main board categories), i dont think any would run it and make it to CE leaderboards

I would be willing to be the 3rd person to do it if you can get one more to make it into a category extension