How to offset faces of a solid inward or outward

 From:  parel
10267.8 
@FrenchyPilou :) Yes that is the solution I was seeing as well- It involves calculating extra faces- and If I didnt have to think about overbuilding this could be very intuitive. Its not bad- but I imagine explaining this to my interns and they might get super confused with the extra steps.
The ability to move faces/surfaces like this is SUPER powerful.