How would I eg. remove toe bones when character has shoes?
There also bones like ToeBaseShareBone that don't seem to do anything

Is there option inside CC3 or upcoming CC4 to delete unnecessary bones (deleted bone's skin weight would then get assigned to eg. parent bone)

Big hierarchy eats performance

Game Base would perhaps solve this, but it's too low poly for my use

(also the beard has unnecessary blendshapes?)