Ive been farming fates for the past three days and I only received 2 crystals. I could have progressed far through the original relic quests within those three days. I was thinking about going back to my Zenith and working my way up to Zeta so that i can trade it in instead of doing these long fate grinds, but im not sure if that would actually be saving time.

Also, lets say I have a monk zeta weapon, can I trade it for a dragoon anima? or does the zeta have to match the anima weapon?