So here is my problem with retaining walls.
1) I need an assembly that can grade to the surface but has the option to override with profile of feature line.
2) the face of the wall must show when visual style is set to "realistic"
3) the backside of the wall must form a tidy surface for pasting into a datum surface whether in cut or fill condition
4) the front and top of the wall must form a tidy surface for contour line generation
5) must be able to cut engineering sections from the wall
6) must have the basepoint of the wall centered so I can run it down an alignment of the centerline
I cannot find a system that accomplished all this. I built an assembly with marked points for visualization, but no shapes for sections or I can use the wall subassembly but then I lose the visualization option and centerline option. I have never found a quick easy reliable way to create retaining wall with this software.