Hi Zar. Good question.
It’s always a good idea to have an extra bone that controls everything in the rig (sometimes you can have a double or even a triple Root!).
This can be used in many different ways to make animating easier.
For example – if you need to shift the animation for a section or even the whole thing. Easy peasy.
If your character needs to go diagonally across the screen which isn’t aligned with the world axes. Rotate the root then animate on 2 axes rather than 3.
You might need the ball to jump on a skateboard. Constrain the Root control then your Body bone is free to do want you need.
You can even do in-place cycles (like a run etc…well maybe not for a ball) and then animate the root to get the actual translation part.
Hope that makes sense.
