AST Anima stat allocation

[MariaNyan]

First of all if you dont do savage, you won't need the accuracy. If you do, it's a nobrainer to put in Acc. As an Astro you will prob always replace the WHM, therebefore making you the mainhealer, this means your best friend is piety.
In order to dps you need to overheal, in order to overheal you need more mana, and to get more mana you either get piety or get the bard/mch to become you slave. The more you can overheal, the more time to dps you have, the more mana you burn though. Which comes to the second point, where spellspeed kicks in, if you cannot widen your timeframe with overheal, you can fit one or two gcd more in before you have to heal, which makes spellspeed imo the second-best choice, it will burn your mana quicker but allows you to do additional actions. Determination kicks in if you have neither of these options, and crit is the worst stat, because of several reaons ppl posted above, agro, unreliability, overheal, mp effiency etc. Scholar cannot overheal with shields, since it basically scales unlimited, crit or not, on top of being mostly dps-oriented. To be short:

(ACC)>PIE>SS>DET>CRIT

That's my opinion.

@Taika
you seem to underestimate Spellspeed simply because you don't seem to understand what those 0.1s or 0.15s difference means. In a 10 minute fight you roughly cast 300 Spells. Those translates into 30 or even 45s saved time, which results into way more gcds than you think, not counting in breakpoints like additional dot when boss flies up or the leeway for additional emergency heal.