Comment 3 for bug 159371

Couldn't you just patch /etc/init.d/bootmisc.sh to add a different message if the machine was installed from a Server ISO, or is running the server kernel?

Use a different /etc/motd.tail possibly. A quick example:

        # Update motd
        uname -snrvm > /var/run/motd
        $server=$(uname -snrvm | grep -o server)
        if [ $server ]; then
                [ -f /etc/motd_server.tail ] && cat /etc/motd.tail >> /var/run/motd
        else
                [ -f /etc/motd.tail ] && cat /etc/motd.tail >> /var/run/motd
        fi

Just my thought.