Everyone jumping down my throat for wanting to hide the command line for new users… well guess what I just found out what the MacOS version does by default? 
And, holy smokes, the Mac UI is everything I wanted for Rhino. Just look at how intuitive and clear this is compared to the 1995 looking Windows UI (also hello proper dark mode):
Ok, so having a scrollbar here isn’t the best, but still a huge step forward, and much of the work seems to be done already:
Please tell me that these improvements will get backported to PC for V7!
(Grabbed the graphics from here.)