If it works, why replace it? They are pretty well bomb proof. What other non wearing parts of the car do you routinely replace when they are working perfectly? A new lock barrel and keys plus a push button start conversion would be higher on my list, IF, I had some spare cash and there was nothing else to spend it on.

It's worth saving and selling to somone that needs one, Dont just sawzall it if you don't have to.

It is best to save it if possible. They do go for a decent price when a purist wants one. However, I'm not sure what you are going to use to start the car w/o the switch.

You can always bypass the old coil and wire up a new one leaving the whole shebang in place - but I never thought it looked that clean.

Myself, I saved both intact setups, and have a couple severed switches I used to wire up a "modern" coil. I also use a "shot" coil, cut the top off and installed a newer coil into the holder - that way there's no big 3" hole in the firewall...