It seems like the massing tools have not evolved for years now and they are still full of bugs. Since every conceptual project is supposed to start in Revit (not Sketchup or Rhino), it would be good to have more solid massing tools that keep evolving.
Some suggestions:
There's many problems with massing that could be identified by a simple dog-fooding exercise. It just seems like no love has been given to this topic and that Autodesk has given up. Whenever I teach new users about Massing, I feel kind of shameful that they still have to deal with these massive problems. My job is to tell them to use Revit instead of Sketchup or Rhino, but with broken tools like this, it makes it hard to make a case for Revit. Please revisit these workflow with architectural designer, simulate or explore a real project and fix the multitude of bugs.
I'd love to go through all the problems we had to deal with on our project that has over 3000 adaptive panels based on Revit Massing.