Hi,
URPMI back-end for PackageKit is not functional, this makes Apper and other operations (such as automatic installation of missing codecs) useless, please fix the back-end (or preferably re-write it from scratch using new features such as parallel transactions (and others) mentioned here):
http://blog.tenstral.net/2012/08/packag ... lized.html
Also it would be great to ship Software Center (Like Ubuntu Software Center) based on AppStream project:
http://distributions.freedesktop.org/wiki/AppStream
http://blog.tenstral.net/2012/08/appstr ... apper.html
http://blog.tenstral.net/2012/08/appstr ... howto.html