Every level in the game can be done as a time trail, so having a leaderboard for each one seems handy. Shame that Line Trials can't be added until more options are added to the site.
If Real Time is used over Game Time, full-game runners can check their best segments and retime them for just the level to include on the board; otherwise it'd be time trial only, which would a lot more consistent in timing but wouldn't be done nearly as frequently I think.
Hey can someone set this up; I need somewhere to submit my sick 0:22:14 Volatile Volcano Metaknight Time Trial Run.
There are way too many variables, and time doesn't even cover everything that the game keeps track of (line trials exist too!).
If you're a fan of ILs, these charts here are fairly competitive: https://cyberscore.me.uk/game/141 - Your 22.14 VV would be 11th!
If it's heavily requested, I could manually import all times from the time trial section to speedrun.com and possibly make it a 5 by 21 chart for it to use for each character. I don't know what I would do with Missile A/B, Balloon A/B etc.
Overall, I don't think RTA should be used in any circumstance with these time trials.