Indeed I am a great fan and PB is one of my main tools in my every day work.
I have zero programming knowledge so I will just talk from a user’s point of view:
One way could be to
-create an extrusion along the x axis
-put your materials on the extruded faces using native su tools
-make it a group and select it
-then press a button (something equivalent to the “auto-assemble”) and PB creates the ‘multimaterial profile’
The uses are many: I work in concept design and my workflow varies from interior decoration to master-planing. many times I have used assemblies for things that could use the ‘multimaterial profile’:
- roads (I think that alone would be enough)
- anything with coloured grooves
- picture frames
- fabrics with different colour front to back
- reflective belts
- (for marinas) at the edge of the deck, you have a plastic ‘belt’ which is screwed with aluminium stripes.
-for classic or arabic architecture: corniches whith embelishments which could be portrayed with texture instead of geometry (VERY USEFUL!!!)
- virtually any assembly which does not have components but only profiles, could be replaced by that.
This frame, could be achieved with a very simple profile and one or two textures, creating a rich result with minimal geometry.
for later editing after the creation, instead of editing a single surface profile (as you do now) you could be led to a basic extrusion (it could have the same length as the biggest dimension of the profile) which again, you can edit with native texture tools and PB will use those UV’s to update the entire profile path.
But for starters: giving the ability to rotate the material 90 degrees (second picture)I believe can be achieved very easily without any restructuring of the UI and it is ABSOLUTELY ESSENTIAL. 50% of the times, after I create an extrusion with a given material, I either have to assign a second material with the same texture rotated, or for simpler paths, I do it manually to keep the material count low.
there is nothing more boncus than a wood column with the wood lines vertical!