Per an inquiry and post on the other board I’ve given exterior trim closer scrutiny and have the following observations and thoughts:
1.) The wainscoting is really a separate feature from the exterior trim even though they do interact.
2.) Currently the only option (feature) available with exterior trim is the corner trim and of course the window and door trim, the following three additional items need consideration and will be added to the exterior trim module:
a) Frieze Board: at the top of the cladding (width and thickness)
b) Band Board: somewhere midspan on the wall (width, thickness and height on wall)
c) Skirt Board/Water Table: at bottom of the cladding (width and thickness)
3.) Three additional parameters are needed to determine whether the three boards cut through the corner trim or terminate at the corner trim, see examples below:
The same holds true for what to do where the boards meet door or window openings and their trim. In the picture above the skirt board cuts the man door trim however the band board does not and terminates at the trim. Also one must consider the case where the frieze or band board bisects the window or door only partially.
In the image below the band board terminates at the door trim:
In the image below the band board bisects the window partially and replace the windows bottom trim:
It’s complicated, but we must start somewhere.
Additionally with wainscoting it would be nice to be able to terminate or start the wainscoting at any arbitrary distance along the length of the wall, this would allow for a 48" return for brick or cultured stone rather than only being able to terminate at the corner.