We often have the need to connect new sewer or storm drain pipes to existing manholes or other structures. It becomes difficult to label only existing inverts for a structure on an existing conditions sheet, then label that same structure on subsequent design sheets and show existing and new pipe inverts on the structure labels. I assume that every civil engineering firm has this same need.
Structure Labels are currently designed to have the ability to separate in and out pipes. We can show all in or out pipes grouped together and even have the ability to leave off in or out pipes if desired.
I propose an additional existing/new attribute be attached to each pipe. The structure label components would also nee the ability to distinguish the difference for its invert components. It would also be nice to have a switch at the top of the pipe network design tool bar that would allow you to switch between the two quickly when adding pipes to the network.
I would think it would be an easy addition to the Civil3D framework and it would be of the utmost importance as well. In fact, I am truly astonished that this issue has gone overlooked for so long, and am not aware of any work-a-round that would even come close to truly fixing the issue.