The packaging system is what originally brought me to debian and ubuntu; RPM caught up a while back, but apt was better for decades. Stability and easy access to good tooling is what I like about Ubuntu; how is Fedora better?
Fedora is a maintainers dream, in my (limited) opinion.
Things like mock and fedpkg make modifying upstream/bundling your own stuff up super easy. Then add in COPR (like PPAs) and it's a feedback-loop friendly setup
