Hey! You can make root motion animations with that Rig, all you need to do is set to Object mode and key all the rig, all root motion you want to make need to be done selecting that way. These screenshots shows how I’ve done a lot of animations with root motion:
Hope that helps you!
Update: I’m sorry I just noticed that the uploaded version was different of the one I show in the pictures and had errors, I’m just uploading the fixed one right now! Thank you very much for feedbacking!