https://www.visualarq.com/ adds BIM tools to Rhino (and the total price of perpetual licenses for Rhino+VisualARQ is still significantly less than a year's Revit subscription)
Sounds perfect, but I've yet to hear of any company using this plug-in!
Personally I also have hope for the interesting hybrids that are continually coming out that are trying to create a seamless pipeline between Revit and Rhino: Google's Flux (which failed), Speckle, RhinoInside.
I also hacked up my own crude solution, which was to continually run a flask server in the background, and then pass json strings between Rhino, Revit, and Jupyter. I do a lot of analysis work (building energy and environmental simulation/optimization), so wanted a solution that gave me access to the scientific python ecosystem.
