only problem i see is that (from my understanding) the game currently is only accessible to people of the community. if that is the case then having a public leaderboard for a game that isnt public doesnt sound like the best idea in my mind.
but the game requesting page should have all the info you need:
the way you worded that reminded me of the old joke about how you could play bayonetta with only one hand
if its just a route, then text.
but if its a tutorial then video.
you could alternatively have a text guide with links to videos but that could still be confusing for a new comer and a video would be better
should link the previous year(s) on the op https://www.speedrun.com/forums/speedrunning/xdflv
anyway here is mine for this year. and behind this link is last year and 22 is here.
i might run ape escape 1 a lot and unlike the last two years i actually ran something every month :D
many categories simply dont exists because someone hasnt done it yet.
though personally having to play 50cc and 100cc sounds extremely tedious only to then play 150cc which at least for my gp skills is very hard for the last two cups
in general as long as its older than ps2/xbox/gc an emulator is fine but check the rules and if not sure as the mods
im really not sure this is the right forum to ask this at all.
if you dont like glitches but want to see speedruns go look at glitchless speedruns. i dont think such a person exists who kinda speedruns 50 million different games and never bothers to get decent in any of them