No.

The Products will be defining an environment and a standard install
set. They may have separate initial *installation* repositories if
they need to provide different options to Anaconda, but beyond that
the intent is for all of the Products to continue to draw from the
same store of packages together.

If (for example) we got ourselves into a situation where you couldn't
install Fedora Server and then also install the GNOME desktop
environment on that Server, this would be considered a major bug and
one that we would need to reconcile immediately.