All 50s crafting means you can repair gear up to L 60, so I consider that one a must. And all 60s will let you repair L70 gear.

As for me, I'm comfortably endgame on 5/8 crafts and MIN and BOT. My alt is endgame FSH. To maximize income on FSH you need CUL desynthsis. Also FSH is not like MIN or BOT. MIN and BOT bring you gil. FSH, like virtue, is its own reward.