I play AST as my primary healer since it came out, it is very fun and good support.
But the new skill Lord of Crowns look like it's useless because the potency is very low at single target.
I think it would be better to change to AOE regeneration or single damage with higher potency(500+ would be good ), so it can take effect to the boss with 2% hp left, when there are only tank and healer left in the extreme trial, either random stack-able buff is fine.

The Lady of Crowns is acceptable for me.

Another thing is Earthly star, I wold love it if it can deliver healing wave for both 2times (after Earthly/Giant Dominance end), but effect fade out after execute Stellar Detonation.

Hope some developer teams would read this post.

Finally,
I do support these threads too:
http://forum.square-enix.com/ffxiv/t...s-Arcana-Gauge
http://forum.square-enix.com/ffxiv/t...need-this-Buff