Hello, some suggestions from my side.
- Allow customizing all keys for keyboards.
- Allow setting FN keys as standard FN keys, or multimedia keys, per app.
- Allow to share a configuration between multiple apps (like groups) for both keyboard and mouse configurations. Usage example: I use Webstorm and PHPStorm, and I would like to have some mouse and keyboard config for both. At the moment, I can't even duplicate/clone the existing configuration.

Thanks for considering and constant improvements.