[Fedora-packaging] RFC: Creating meta group packages via comps

Hi, It should be really easy to make a script that builds metagroup packages from comps, no? This will allow someone to install a group such as kde/gnome as an rpm package and when packages are removed/added/changed in the comps groups, the meta group package also changes, and the user gets the appropriate changes. I don't think this is possible now with the groupinstall feature in yum which IMO is a bad feature since it should be done with meta group packages as I describe. Comments?