Same but for Kinoite and Aurora. I recently rolled my own image off Kinoite using the template you linked. I highly recommend it! It’s fun, pretty straightforward, and it feels good to have a custom base for your exact needs.
Yeah, I also prefer the default Silverblue, but would like some codecs on top, in addition to my own selection of packages. I'll look into the ublue-os/image-template!
Maybe https://github.com/ublue-os/image-template is the way to go when I do my setup next time.