It would be really helpful if we could get a copy in the takeoff side which would copy not only the takeoff, but also the quantities. This would be especially helpful for residential as many elevations are 80% the same except for the front elevation. That could save a lot of time.
If we add the ability to right click on the takeoff in the sidebar and "Duplicate As" does that solve what you're after (assuming that it would duplicate all takeoff sections with it)? If so, that's finished in local development and will come out in the next release.

Yes that would do exactly what we need!
Game changer! Avoids so much redundant work. Thank you.