I would love the ability to create 2D AutoCAD linework and geometry for layout purposes in a coordinate zone assigned Civil 3D drawing, then be able to connect and configure that data in Infraworks only by assigning the correct coordinate zone. Currently the configuration of 2D Overlays requires quite a bit of trial and error with coordinates, scaling, sometimes rotation and coordinate zones to get that information into the correct location that can be really time consuming and frustrating.