I have MX Key and Master 3. I have a problem with switching between devices.
1)Should have option to combine both Keyboard and Mouse to switch. If that option is checked then it's enough to switch on either mouse or keyboard it will be switched both together instead of doing separately now.
2)Allow mouse top button ( the one is behind to scroll) to control switching device rather than doing it bottom of the mouse or depending on Flow by installing software. This way I can never depending on Admin to install software.

I spend some time to install and give feedback about improvements. I can see it online many people are expecting this feature. Even logitech blog. So try to add this feature or at least let me know the status.
Thanks
Prabu