>What is it that you're trying to accomplish with all these things?

Are You Being Sarcastic? If not here we go.

1st. workflow (Graphite) & 2nd. workflow (meshlab) was more like a tip to whom wants to convert tris to quads.
I do build physical prototypes which then I scan after that I refine the mesh with Graphite or meshlab for further use in ZBrush, Modo etc....(depends the nature of the project).

3rd workflow. Well better show these images by yolk than writing an essay. you can see most of the workflow I was describing earlier.


quadrangulate voxel sculpting.


Converted to Nurbs with tsplines


imported into solidworks, shelled (wall thickness) and groove added.
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Now for "render friendly" output, Modo 401 will have a solidWorks importer. (but I'm skeptical about the mesh quality. I imagine the mesh that is saved with the SW file for screen display will be what 401 Imports. But this is still a nasty STL like mesh.)...time will show.