I would think the Liberator system would be as close as ideal you could get for this.


I used the Molex connectors for the jack and ground. It makes it easy to swap pickguards. The Liberator is a good product, too, although the terminals are very small, so it might take a little longer. Not as long as firing up the soldering iron.
It is amazing to me that after 70 years of electric guitar, there isn't a universal system for this yet.
I have gone to these