WISH: Match Mac by Supporting Multiple Docs in Windows

Ok, if it can solve this problem:
How, using RhinoCommon, do you work on/reference/compare multiple drawings?
Comparing files - Rhino / Rhino for Windows - McNeel Forum

The only thing I can think of is using RhinoInside to open multiple Rhinos, but then your code is outside Rhino when it really could/should be a plugin working with the user as they bounce between documents.

You can import, but that seems to silently change the guid’s on objects from one file which have the same guid as the other file.

I don’t think worksession quite handles this either (what’s available in RhinoCommon is really sparse).

What’s current recommended practice?