Create a complex Civil Cell

I believe it is possible. You must show software your design intent: use civil geometry tools, use civil accudraw. You can include linear templates in your civil cell, for sidewalk for example. If you want an element to be a part of Civil Cell it must be fully fixed, it has to depend on another element which depend on another element. The tree of dependencies must lead you to civil cell references elements.

Yes This is possible...

Do you want your walk to terminate with ADA accessible at the curbline?

Attached is the 2D version of your cell. Understand that the 2D aspect of any cell is the most critical and the hardest portion to create.  Without a complete understanding of Horizontal rules and relationships a user will struggle to create basic cells.

you can test out the cell by placing it on the 2 linear elements in the design... At first you may notice on placement the one sidewalk edge displays in the street intersection, this is because the sidewalk offset  needs to be increased..

This is looking good and ADA would be nice too for future.

I see a couple of things that you have designed on the other way, Ill try that way too.

It Works!

Only problem what I have now is how to define all the clipping references?

When I define all surface as a clipping reference it all go's wrong.