That part's easy. Make a tut if you figure out how to mix animations by weight (e.g. to switch between running, walking and crawling smoothly) or how to control rig with IK (e.g. to make punches actually connect or to make the character actually reach for an edge when climbing like in Assassin's Creed).
That may be the case for you but this might be helpful to a lot of beginners, it definitely took me a while to figure this out when I was first starting out. I do understand that they now though that have an example on the website now. But some niche things such as the blender action system is alien to a lot of people and the example on the website doesn’t cover how to do that either.