I just got my White Mage to 60 and for the first time have run out of space for all my main healing abilities on my main hotbars. Since Tetragrammaton is like Cure II, but costs no mana and instant cast off GCD, I figure it might make sense to just do a macro like:

/micon "Cure II"
/ac "Tetragrammaton" <t>
/ac "Cure II" <t>

If Tetragrammaton is on cooldown, the line gets ignored. I can still see the Cure II "crawling ants" around the icon if it is a mana freebie and I save a space on the hotbar.

The downside is that I lose an instant "oh sh*t" cure, but since it is only like Cure II I don't know how often I would use it in that capacity. My order would probably still be Benediction, Swiftcast, Cure II anyway.

If I don't macro up, then I think I'll move Eye for an Eye onto my L2 + R2 hotbar since that is only every 3 minutes and it isn't critical to have up every possible time.