KeyRocket is an add-on that you can add to Chrome, Word or gmail etc. When it is installed it allows the user to hold a single key for a few seconds which then displays all your keyboard shortcut commands on screen. Let go of that key and it hides the shortcuts.
This is brilliant when you are learning new software keyboard shortcuts and also great when you are having a brain fart and just can't remember!
I'm not suggesting use KeyRocket but if the same functionality could be turned on and off within Fusion 360 it could be really useful.