Direct Shortcuts like sketchup, Modo, Lightwave or Photoshop. Just press the letter and the tool is activated. no enter, no right clicks or any other key. It’s one click less hundreds of times… I know Rhino has more commands than the ones that can be directly mapped, even with one modifier (ALT, CTRL, SHIFT) or with a combination (ALT+CTRL, ALT+SHIFT… ) , so the user could access the command line with a special key. For instance press “c” and then start typing the whole command. That wouldn’t happen too often after getting to know the keyboard. And maybe these direct shortcuts could be deactivated via the preferences for more traditional users.
In my opinion this streamlines the workflow dramatically.