so you want to encourage people to not upgrade to RHEL7??!?!
just being techincally better (assuming systemd is), isn't enough to drive people to switch to something different.
If it was there wouldn't be nearly as many peole using Windows :-)
but even in the *nix space, look at syslog. For many years syslog-ng was out there and nobody disputed that it was a better syslog daemon than what everyone was using, but for the majority of the people plain syslog wasn't 'broken' enough for them to be willing to take on the load of learning a completely different config syntax.
rsyslog displaced sysklog very rapidly in part because it didn't force people who didn't want to use the new features to learn new ways of doing the same thing (and those wanting to do something different were willing to learn how)
I know people keep repeating how systemd doesn't force you to change, you can still use init scripts, but that's not how it's being used and setup in the distros using it so far.