Fuse box connections

Like many 300D owners, I have experienced jealousy of the 300SD fuse box. The SD has a fuse box that allows very easy access to the underside, to connect wires for various components added to the car. In my 300D, a 1984 W123, accessing the underside of the box has been impossible so far. So, I have had to connect wires to the top. I have done so primarily by using a ring terminal and connecting it with a screw to one of the threaded holes beneath one of the fuses. It was necessary however, that the screw in that hole, from the underside be missing. I had a couple of these but not enough.

I saw this photo on the fattywagons site today and I think it is a brilliant solution. I never connecting them in this way. So simple. I am curious however, how they plan to replace the cover to the fuse box without pinching these wires. Any ideas out there?