The default gtk setup shipped with previous RedHat releases have not been
very good in the usability department, and IMHO this release would be a
great opportunity to fix some of that (rather than waiting for GNOME 2.)
Raleigh as a default theme, with the menu usability enhancements already in
gtk 1.2.9, provides much superior widget recognition and overall usability
to that found in previous RedHat releases.
with GTK+2.0 being the main source of work going on in that department we will
probably wait on this (plus we are frozen on that for now). The Raleigh theme is
a preview of what the default theme will look like once 2.0 is released.