just looking through this thread, the whole concept seems very innovative =]
as for the quick connect...
Couldn't you perhaps have 1/4" jack sockets countersunk into the body of the guitar, with 1/4" jacks on the end of the neck peice? i'd imagine it wouldnt degrade the signal at all, you could perhaps use one for each pickup too. You'd have to use Stereo Jacks/Socket i'd imagine.
Just tossing an idea out there.