I have some ideas for speedrun categories. These may not be all that exciting, but all gimmick runs of stages. Shinobi City is the simplest, just get to all four geysers. For a map like Eagle City or Croissant Arena though, it gets waaay more interesting. There are multiple tiers of difficulty, shinobi city is possible with a hammer and just the dodge and double jump. Eagle city though, is only possible using all of the base movement options, barring any movement specials.