The 2 largest upgrades that Logitech could provide to the MX line would be to
1. Link the easy switch button on the mouse with the button on the keyboard. If a mouse and keyboard is being used on the same device, then a user presses device 2 on the keyboard, the mouse should switch with it. The current implementation is annoying, having to flip the mouse.
2. Logitech Options+ for iPadOS.