it has support for these keyboards:

• Infinity 60%
• Infinity 60% LED
• Infinity Ergodox
• WhiteFox
• K-Type (coming soon)

https://github.com/kiibohd/controller

Since I own a Infinity Ergodix I'd love to spend a bit more time on customizing the look and feel.

https://input.club/devices/infinity-ergodox/infinity-ergodox-build-guide/

You can use the Virtual Serial Port to write text/color to the screen which could be used to display all sorts of useful stuff like incoming mail/irc messages, cpu load, acpi if used on a laptop.

https://github.com/kiibohd/controller/wiki/Debugging