Interesting idea. I wonder if it makes sense to take it further and create a surface (quilt) to represent the hole, especially if was blind with some type of drill point. You could then just pick on this surface and solidify in the parent model instead of having to create separate extrudes that reference the curve. Thru holes might need a quilt guaranteed to be thicker than anything they would ever go through. Of course this might mess with your drawing view sizes…
Tom U.
