Originally Posted by
JayCommon
It's a domino effect. The one thing you left off this list, which will have a direct impact on high-level crafters, is that all of the recipes for Master books only require shards. You need 8 and 7 shards per craft, and that's if you didn't need shards at all while crafting the base materials for those book crafts (which admittedly, most take crystals), so before the nerf you would need a bare minimum of 400/350 shards to get one i70 tool (no fails, previously buying all mats). When the amount of turn-ins decreased, so did the price of master demimateria, and the amount of endgame crafters (3-4*) jumped significantly.
Also, every attribute potion of the highest level only requires shards.
I would consider both of those high level items, with the former being a gateway into higher level crafts. I know many people who are 2* crafters in every trade that didn't feel the RNG/price of getting higher was worth what they had to do to get there. Shards is only a small piece of that puzzle, but it's a piece nonetheless.