I think its cool to add a route on the run (optional) and a filter to leaderboards, like: Icefull-Waterfull, C5, E3, C3... But I don't know how hard to do this because we have a lot of runs and its not the main leaderboard.... but its my suggestion I think it would help a lot to find other runs with the same routes.

I would say that we have to put first the categories at Megaman leaderboards for it to then be replicated at this speedrun.com. but i support your idea