Taking about saving space on XFCE Live spin.

What about removing java, java-1.7.0-openjdk is the #2 largest packages on the current live CD only glibc-common is bigger.
It is a very high price for having java in the browser.
Doing a yum remove java*, will save 96M (installed size)

PackageKit is still installed, even if gnome-packagekit is no longer used.

it looks like @standard contains 'PackageKit-yum-plugin' there pull in the rest of the packages.

the 'realmd' also pull in 'PackageKit-glib', but is it even useful in XFCE, It look very releated to the gnome world.

-PackageKit*
-realmd

in the live cd kickstart, will save 4.1M installed size on the live cd.

Tim