On mandriva forum [1] now was a post about OpenSuSE build system can package rpm so they work on different Linux distributions.
http://en.opensuse.org/Build_Service/cross_distribution_package_how_to "The Build Service can reliably package rpms for not only openSUSE, but also recent SLES, CentOS, Fedora, Red Hat Enterprise Linux, Ubuntu, Debian and Mandriva distributions." It may not need much more work? Benefit is that maybe more work could be shared between distributions. And if other dists could use Mageia packages, it is a way to draw attention ;) But maybe it slows other progress such as future move to rpm5, general installation and build system development? [1]: http://forum.mandriva.com/viewtopic.php?t=132237
