Honestly, I'm not sure this brings value for you - maybe it does
Several of the project staff have experience with Yocto/OE for other projects and work requirements and it has inspired changes to our own in the past. It does benefit from having far greater build capabilities, but it's also quite a bit more complex and is thus less accessible to the type of hobbyist developers we attract (for our hobbyist distro) and that's long recognised as something important for the project and the ecosystem of forks that surround us. In that sense it's an interesting exercise to see, and kudos for getting things as far as bootable images, but I think we're unlikely to change the buildsystem we use.
Things I'd like to see done (which we mostly know how to do, but time..) is moving to a reusable toolchain as this would massively reduce the total time required for building nightly images with CI and would probably allow us to test-build PR's. The uboot_helper script could also be expanded to more of a build-matrix function; e.g. https://github.com/LibreELEC/LibreELEC.tv/pull/6427 which has bit-rotted a little as people's lives changed and became less active. We are laggards at adopting things largely due to being a bunch of hobbyists and the desire to not fcuk up something that basically works ![]()