Option for walls to embed curtain walls as framings not just as openings and curtain walls to host structural framing elements not just mullions.

[ConstantineC]

This simple idea would drastically improve the workflow of creating wall framing systems.  

A wall  (simple or composite) should be able to host (embed) a curtain wall, without it being cut to its full thickness like a wall opening, but just by the thickness of the curtain wall. Also, the curtain wall ends to be constrained automatically to the host wall 

Then for proper scheduling and management, the curtain walls should be able to use structural framing elements, not just mullions