Join surfaces at certain width along a divided surface

Hello,

I am relatively new to Grasshopper and I am trying to create a definition that essentially creates a series of surfaces that flow across a boundary curve and are trimmed by that boundary, leaving only the surfaces within the boundary.  If these surfaces get too narrow, they would be joined to adjacent surfaces.  Also, the surfaces need to be individually lofted so that different layers can be applied to each surface rather than having one loft that is constructed from all the curves.  

This is meant for an art piece depicting muscle geometry and muscular tissue.  There will be many base muscle geometries (the boundary curves) so this process of creating the lofted surfaces, joining the narrower surfaces, and trimming them using the boundary curve must be done many times on differing boundaries.  

The curves are going to be laser etched, so if they are too close together they will look like 1 thick line instead of many thin lines, and thus there needs to be a threshold of how narrow the surfaces can be.  I have attached a diagram of the desired end result along with my definition and have been working for hours on grasshopper to achieve this but it might be over my head.  Anyone have any ideas?