In order to facilitate easier use or simply display certain aspects of the design it would be useful to be able to hide or isolate particular roads (similar to the object isolation in Civil 3D). Most useful for complex models with many roads, some of which may be grade separated.
At the moment roads appear on their own layers when imported from Civil 3D but as soon as any edits occur on them they become part of the "Sketched Roads" layer. If the original layer were able to maintained or, better still, have the ability to move a road to its own layer so that visibility can be controlled.