Adding / to the default config file is a very bad idea, I remember reading somewhere on the net that once someone opened his mail with kmail, KDE started the attachment (A windows virus) with wine, and the virus sent itself to other users on the net. I don't remembered the details, but I do remember that the virus could get out the the net because of that / being in the wine config. So having / in the default config file is a very very bad idea, because these problems could happen again in the future. A solution to get people to have a good configuration, would be to have winsetuptk as a "official" winehq utility, and recommending people to use it to set up wine, but unfortunately winsetuptk puts / in the config file, but that can be changed. It also maps all the removable drives. BTW I've added binaries and source of winesetuptk to the wine sourceforge page, the license is gpl.