When I am doing a road takeoff, I would love to be able to do one side of the road and then have a function to mirror the item to the other side of the road. Offset/Array/Copy doesn't work all of the time as roads meander.
That could be useful. I was originally thinking to select the object that I want to mirror, enter the dimension as we do for offset, and hit "ok". In the video, tie-ins will require manual "tweaking" using the measurement option, but maybe you could program it to say 1. select the object to mirror, 2. select the object(s) that you want to mirror across, and then maybe the program figures out the tie-ins?