In Cubase 11, the focus conundrum of mixconsoles has greatly been improved. Meaning, if a mixconsole is already open but doesn’t have focus, the key command will give it focus. (For reference, the previous behaviour was to close it, even if it didn’t have focus, and then the user would give the command again so that the mixconsole opened anew, in focus.)
The next logical step in my opinion would be to disconnect the “close the mixconsole” part from the key command, and offer it as a separate key command instead (Close MixConsole 1, 2, 3)
This would be good for working with multiple mixconsoles, when one cannot tell which one has focus at a glance. If the mixconsole didn’t close, one could always give the appropriate mixconsole’s key command before working on it, and it would still remain on-screen, and get focus.