Hi Rusty, if you need to get just a few reference points like you know something is a circle and you want to draw a circle in MOI there, you can use this OBJ to 3DM Wireframe converter:
https://moi3d.com/wiki/Resources#Obj23dmWireframe_converter

That will bring in the triangle mesh model as wireframe lines in MOI and you can snap to them.

re:
> From the videos I've seen, they seem to used the rough blob of a scan to make a real drawing in CAD.

Yes, there is some software that is specialized to do this task of "Reverse engineering". But good ones can be in the $10,000 range and still have a high learning curve.

The feasibility does depend on things like what type of objects you need to process. If they're mechanical shapes and you want to extract a few lines and circles that could be possible but if it's a complex organic non-mechanical shape that's much different territory.

- Michael