Because this is a special condition, I would not try to do this as a railing, or as families. The curtain wall tool would be easier and more flexible for doing changes.
Do a curtain wall, and modify its profile in elevation with Edit Profile, as shown below.
Do the wire mesh infill panel as mullions of the curtain wall, with the following characteristics:
- panel : empty
- vertical grid : layout : maximum spacing 4", mullion type: (a new mullion type with a circular profile, with the desired radius).
- horizontal grid: layout: maximum spacing 4", mullion type (same as above).
In the instance properties, select the curtain wall, and, assign an angle to the horizontal grid = -1 * slope , for example = -30 , or -20.
Then, I would add the posts and top and bottom rails as structural framing wood elements. Or as a model in-place extrusion.

Alfredo Medina _________________________________________________________________ ______
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