Glen Albert, of Autodesk, is taking requests for additional commands for the Civil 3D Feature Lines toolbar in the Civil 3D Wishes Discussion Group.
This is a GREAT OPPORTUNITY to be heard, make suggestions, and hopefully contribute to the future capabilities of this feature.
Click on the links to get to the browser version of the Discussion Group (you can of course use other methods also).
Autodesk is asking. Let's give them feedback!