"To be fair they all are soulless cookie cutter mass produced industry machines!"
Was going to say that too. Fenders were made with replaceable necks and other parts from the get go. I don't think Fender wasn't ever mass produced industry machines.
That was kinda the goal. Easy to assemble guitars with parts and woods cheap and easy to get at the time. Musicians make them magical, just like any instrument.
My perfect Jazzmaster is a Fender Jim Root v 4 Jazzmaster. It has pickups I love stock, bridge I like, neck shape I like, and is even white.
If you want a traditional Jazzy, it sounds like the 65's are the way to go.
I love Mastery bridges, but my Jazzys with mustang bridges have worked fine. Jazzy stock bridges are ok but I find the saddle grooves to be to shallow for my preferences, but it depends on what YOU want and works for YOU.
Mustang bridges aren't super expensive either. Also I don't mind MIJ electronics or pickups. They are different, but different isn't always bad. I don't think you need to dump out pots if they work just because they are mini or not CTS branded. If it works, it works. Same with fancy oil and paper caps and such. I have tried a bunch and resistors resist and caps do their thing.
The only part of a guitar I think has magic is the user.