Apart from being an integrated, polished distro that brings together all the latest development tools. And being the basis of RHEL, CentOS etc. And the distro used by tons of Linux developers. Yeah it's done nothing at all.
Fedora users are testers for RedHat, this does not mean that next RH release will be identical to Fedora from today, as an example the current RH uses a classical GNOME setup by default in a way telling us that GNOME UX innovations were not appreciated by RH for the workstations
I understand that, but what is the advantage of a Fedora user, your are testing bleeding edge stuff for RH, only if you are in for the bleeding edge and experimental features and you also are working with RH and CentOS servers.2