JNR,
From your post, I can assume that you agree that the 2D Add-Ins IS stupid and should go? Or do you prescribe to the "more than one way to do something" theory?
I to have had years of experience in using, training, programming, selling, supporting, etc. of not only AutoCAD, but Pro/E, MDT, and SW.
I remember when AutoCAD had a "revolving" right-side menu (as Pro/E did). They finally changed the interface (as Pro/E did) to the bazillions of icons we see today. In AutoCAD, you can use these icons effectively. You can also use the pulldown menus. Or you can still use the Command Line interface.
Which AutoCAD option is the one to use? It changes depending on your abilities and/or your stubborn-ness.
SW for all intensive purposes was born in the icon/pulldown era, and should not "backtrack" into a text command line format. Just because they have a minimalistic command line, does not guarantee AutoCAD users flocking over. So, end it. It is WORSE to use than the basic interface. Marketing fluff...
Also, for what it is worth, I for one (may be a lone wolf) think that SW should better their Windows based product rather than port over to a up-and-coming, but still vastly out-numbered operating system like Linux.
Mr. Pickles