Just to make sure we are on the same page, which I believe we are.
The original sliding switch on the Cera... had a conductive end and non-conductive end to toggle turning the Cera on. The idea is to put a small spring around one end of that switch.
I think we are. You'd need a
really strong spring to ensure it'll come back under sub optimum conditions (otherwise it's a run away.....), folks rant long and hard about that already at more minor levels. Are you suggesting say ten or 15 pounds? That's easily the pressure I've had to put on the slider when it's bound up on occasion (like when it gets tighter from heat in use....).
Also, again, sometimes you push it to on, it moves but doesn't connect since the clearances are so tight.
A proper switch where the cart and battery don't really make up part of the moving contact sets is needed IMO. After inventing that, you then need to decide how to mount it (not trivial). Best option here is probably replacing the socket plate and mounting the switch to the bottom of it. This (that plate) is, of course, the first thing in. Like the radio in an imported car, everything is built around it. First step is attaching the strip to the plate. Then the plate to the tube, the strip to the wall and connecting the base ring by soldering then epoxy. The rest is screwed on, tested and inspect a final time and sent to you. To modify that plate you literally have to start all over. Also defeating the safety pin as an option will have concerns with some, whatever you substitute should be very positive so you can honestly call it a safety for a latching switch below.
Not easy, or it'd be done I bet. Worth doing, of course.
OF