Inside Unreal: Animating with the Control Rig Sample Project

is it possible to use a control rig as a top layer to just adjust and modify an existing animation ?
can the mapped control rig controllers changed during run time to control different bones ?
can i use the control rig in vr to manipulate a character ?
can i retarget a control rig to another control rig for similar skeleton ?
is it planned to use the control rig to affect the full body ik that will be added in the ue4 4.26?
is it possible to do squash and stretch in the control rig ?
is it possible to do matching to the ik fk controllers when switching between them ?
can i constrine a bone to a particle or a clothe surface in the controle rig ?
can i make the controle rig affected by the dynamic system like the rig doll ?