There is already a KDE-on-Red Hat/Fedora community project, as we all know. It would be ideal for that packager- and userbase to maintain KDE for FE.
The only problem as I see it, is that the current KDE-on-Red Hat/Fedora project builds a version of KDE that incorporates patented technologies, such as mpeg playback (xine-lib, lame etc). Hopefully it's possible to split those parts out in separate packages and throw into Fedora Free World (aka livna).
Rex, what do you say?
I'm all for splitting out the questionable parts, as long as they are available elsewhere, like rpm.livna.org
-- Rex