custom rig creation improvements rigify

Currently have certain limits, like we only use the premade rigs, also we cannot combine the human rig with the animal rig.

If there is a possibility to combine different rigs, there will be possibility of creating of creating and humoid cat, a human wings, a shark with leg.........etc, all these can be animated.

It would be greate if the armature edit mode also have, some similar flexibility like mesh edit mode. In mesh edit mode there is add cube, add sphere, add cilinde....etc., Similarly, in armature edit mode why not add arms, add wing, add legs, add head, add tail......etc., include animal and human categories.

Animation should not have limits, currently rigify is limited to human, animals. We need to have option to create humanoid animal rigs...............