The only thing I would change of AST

[Archvile78]

I mainly use CO + Luminiferous Aether, that extra 5 seconds of MP regen is handy. Sometimes, i also use it to stun big pull then immediatly chain it with CU.

[Alistaire]

I mainly use CO + Luminiferous Aether, that extra 5 seconds of MP regen is handy. Sometimes, i also use it to stun big pull then immediatly chain it with CU.

Exactly this. A stunned pull right before Collective Unconscious means 4 more seconds of uptime and pretty much negates the possibility of using CU then needing to avoid an aoe so fast that the regen doesn't apply.

Also I've said this in several other threads and it's as true here:

You can't balance jobs based on individual abilities. No ability "needs a buff". Only jobs. If a job underperforms, you buff it by buffing one or more abilities. You might as well say foresight needs a buff. Sure it's underwhelming but it's a tool all tanks have access to, and nobody says "man I wish tanks could foresight better"; it's the whole package that counts.

And yes AST overall is still underwhelming, so the idea of buffing this ability isn't necessarily a bad idea. But if it's a good idea it's not because of the ability itself but the job using it.