Hello,

I've cobbled together a workflow for illustration that works pretty well for me even though it does require repetition.

When a model is completed I use Array > Curve to lay down a set of points along edges on one side of the model. If the model is symmetrical on an axis I'll use a midpoint to start. I'll then run the IsoAtPoints script surface by surface in a single general direction, having the shading lines moving one way just gives the eyes a direction to follow although it's really just an aesthetic choice.

In order to keep the shading lines consistent across multiple surfaces I use the MarkCurveStart and MarkCurveEnd script and walk my way across surface by surface. Michael Gibson provided the way to make one change to the start script which then allows end to end matching of shading lines across surfaces. That provides a set of shading curves which then can be exported.

Depending on the exported curve set I determine whether to use Illustrator plugins from Astute, limited palette image tracing and segment deletion in Corel and then curve cleanup no matter what application downstream is used.

I still haven't figured out how to round trip the AI files back into MoI to use the curve editing tools there, the dimensions always seem to be a bit off when edited. If the technical illustration focused features make it into v5 that just means a more complete deliverable being output right from MoI.