I have been thinking about this exact thing lately--except the octal part--Not a bad Idea.
they tend to be a tight fit but maybe eliminating some pins would remedy this--you want it tight but how to secure the plug end to the head assembly stronger than the friction fit of the pins?
Ideally the internal top plate would be thick enough acrylic that it could be threaded so screws could be used to retain the head, and molex sockets could be fitted.
another perspex plate could be fitted to the head and have contact pins installed. how to retain this? cut a groove for a split ring...who has a lathe?
if someone could do this they'd sell like hotcakes
a copy of the B2 plastic plug/socket bits would be useful--especially the plug side