Time starts when you are in the Shrine of Resurection with the Obliterator equiped. (Which is automatic)
Style% would be a good idea
What if Fall-Damage-Cancel was a part of the category?
What if there was a speedrun completing the Champions Ballad as fast as possible. This would include the One-Hit-Obliterator section, all Champion Songs, and the Divine Trial. The time starts when you gain control of Link when you have the One-Hit-Obliterator. The timer ends when you hang the picture that Kass gave you in your house. You must ride the Master Cycle Zero to your house in Hateno Village. Any glitches you find would be allowed. I'm not sure if it would be a Level Run or a Full-Game Run.
Now I would do something to get last place because that is what i am all about. I'm just gonna go to Medoh and work on getting awful times.