"rpm.org actually introduced lzma payload compression in 4.6.0 using the format that changed, making use of it resulting in rpms useless by anyone.
The fixed support of rpm.org was contributed by myself after raising the issue and kicking and screaming on their list for like a half year before I got their attention."
"Experimental support for LZMA payloads has been added but this is unsupported as of 4.6.0 release, official support will be added in an update once a stable release of xz-utils (formerly lzma-utils) is available."
This is precisely the reason why Fedora didn't switchover to using lzma at that time and only switched over when the feature was not experimental anymore.
"Hah, yeah, you'd certainly have more faith and find yum's support for this more credible than what berkeley db has offered as functionality for years.."
This is a comparison between two different things are a different level. Doesn't seem that meaningful.
"Yeah, go ask the SuSE guys about their involvement with rpm.org, the last communication they ever had with Fedora was the RPM Summit nearly two years ago, with nothing ever happening or communication taking place since, with zero direct involvement in upstream development.."
They had communicated that they haven't allotted resources to upstream rpm development (this isn't a advantage for rpm5.org either) and haven't done much work but the amount of communication or patches are not zero.