certainly is an interesting account, thank you for sharing.
Forgive me for being a voice of condescension but if we assume you pay $15 for an epiphone pickup... then put $10 worth of parts into it... pay yourself $15hr for an hour to disassemble a pickup, then scrape off wax and reassemble... we're at $40. I buy used seymours all the time on craigslist for that... so I'm not sure it's worth it for everyone. That said I've been known to waste a lot more on much more futile efforts so in summary: rock on.
Still good info, and I've replaced magnets/slugs on pickups with some success(convert silver to gold slugs comes to mind)... but it's the kind of thing I would really save for a pickup that I really liked or matched my guitar in some way, or just to have fun learning!