Having both the MX Keyboard and the MX Anywhere S2 devices, it would be nice to pair them so that the Easy-switch buttons would change both the keyboard and mouse.
So, if I want to use computer one, I click Easy-switch key one, and both the keyboard and mouse switch to the corresponding setting to work on that computer.

I know there's also the Flow option, but it is not always what is needed, and most of all it does not work when using a VPN (which in most cases is required for a work environment).