Epic/legendary crafting recipes. Something on par or better than current Dungeon gear you buy with tomes. You know, make crafters at 50 kinda relevant.

Maybe recipes requiring parts from bosses from fates/dungeons. This would require certain fates to drop items guaranteed to those with Gold medals in the fate.
Dungeon bosses can have a chance to drop them outside of the coffer that drops when you clear it, perhaps a guaranteed item drop if cleared quickly and everyone can greed on it. This means even level capped dungeons can be something everyone can do more than once for their story as a means to generate gil etc.

This way battle classes can sell them on the market to make some gil since there are no real ways to generate gil comfortably at 50, and crafters can spend some of the money we've racked up from selling our wares on the market place. And then those sick of the grind or stocking up gil can buy this gear and be happy they dont have to grind AK anymore.