So what is Bis for Red Mage?

[Hyrist]

-snip-

It's debatable the level of impact spellspeed will have as it does not affect our melee combo and ideally half of our casting is instant at minimum. There could be an argument for its influences on spell GCD, but when compared to the benefits of other, more uniform damage increases Spellspeed is in greater doubt for Red Mage than it is any other caster class.

Likewise, our potency is averaged at around 300, with little variance to that aside from our end of our Melee Burst combo. This could be an argument for more stable increases such as DET and dHit over Crit, or to take a chance on more frequent spikes on Crit, especially given the power spikes from dCrits.

In the end, Minimal trials won't be enough to make such global calls. We're going to need to see what the increase values for each stat are by stat weight and their effect on Red Mage particularly (which means extensive damage trials) before making a call.