1) The simplest way I can think of to answer this is, if you want to put all the circuits in one place and extend only the two signal wires, you have to put the circuits all in one place with your hands, then extend the signal wire with your hands. I seem to be missing some information about why it is difficult to, put the parts on the circuit board, connect the wires there, and extend the wires to the switch.
2) Why is it important that there doesn't have power at the input switch area?
3 Why do you think the "best method to give inputs to your logic circuits" only requires one part?
4) The fact that a reed switch is being used limits the frequency to less than 1000 cycles per second.
5) The "not connecting" method requires even more parts than the resistor and capacitor method.
6) I'm happy that you got over the need to !!! every sentence. Thank you.
When a circuit is this difficult, I expect I will learn something from the experience of working on it. I eagerly await your information.