Thanks bud, I'm thinking more and more I should re-write (I wrote it somewhere on an old PC that's retired somewhere, over ten years ago) and publish it for the first time. I still have the collection so it's no problem scanning the cards again.
Basically I was a frequent user of both Beckett and hobbyinsider and I knew a kid in his very early teens that was collecting. He totally understood the market on players, prospects, patches (number of colors, breaks, game-used vs. event used), autos (hard-signed vs. sticker) and all sorts of stuff like why one /10 card was very expensive and another /10 card of the same player and same year was worth trash.
But what he didn't know was how and why the hobby was like this so I made my top 10 list to help teach him as a visual indicator, since our hobby is so visual. And then as I was choosing examples, 10 ballooned into 50, chronologically.
Just as sort of an idea of the list, the first card was the 88-89 Topps - Wayne Gretzky "sweater card". The "last" card is the 05-06 Upper Deck Young Guns - Sidney Crosby.
For your Pacific example, I'm wondering if maybe I should do another list, top 10-ish of cards with innovations we wish the hobby would do more of/do again. I personally love Dufex cards and I think a LOT of people liked Pinnacle's Masks cards. Maybe couple that list with cards with innovations we hope never come back, like the cards with the peel on the front, lol.