ATM it is very uneasy to edit system files as root with a GUI.
E.g. if you want to edit files in /etc, /boot/ etc... you have to go to the console, get root and edit the files either with nanno or with "sudo gedit" (GNOME) or "sudo kate" (KDE).

It would be a good idea to integrate a "Administrator mode" button or something like this with policykit backend into nautilus/dolphin.

I think for nautilus is something lika that underways, but for dolphin not.
To access root-only directories a question while entering the dir would be ok, but for editing files e.g this is not enough.

Other solution would be - every time I don't have the rights to do something (save /etc/samba/smb.conf e.g.) the systema asks me for the password.