The greatest feature you could add to keyboard control would be the following: the system should automatically switch between keyboard layouts, depending on which keyboard I am typing.

The app should memorize layouts for each (e.g. system default and logi product) so that the moment I type in one keyboard, the OS automatically switches to that keyboard's layout to make sure the letter is correctly input.

I have a laptop with international layout and a Logi keyboard with german layout. Switching between layouts is annoying, time-consuming and extremely counter-productive. I currently use the homebrew "autokbisw" script, but it is simplistic and not officially maintained anymore. If Logi solved that problem, I am sure I would be a returning customer.