I have invented a procedure to export Blender Rigify Rig to Unity.
I didn’t like Unity’s procedure from manual because I had to reparent some bones from rig to be recognized as a Humanoid, and this modifications broke some controllers.
The way I explain in next video has been widely proven.
Because at the end you only export a simplified Metarig and the model mesh, is lighter than esport all rig with full controls.
I hope you enjoy it.