Its april 2016 yet no healer stat weights???

[Kaurie]

Crit is surely awesome if you play NoctAST / Scholar because shields do not generate overheal, but as WHM I don't like crit.
A critical heal often creates overheal because I don't cast heals wile relying on crits.

This only would make sense if our heals were already near the amount of peoples hitpoints. However, we heal for 3k and they have 15-25k HP. That could mean the difference in needing to cast another heal / cd or not.

For example, maybe there is a tank buster coming up that hits for 20k sending your tank down to 5k. You line up a Cure II and crit it for 8k, you're still no where near overheal. Personally, the largest heals I've done on both WHM and SCH are 12k and 13k respectively, and even that wouldn't result in overheal. If overheal is a common issue, it may be that you are healing to soon (i.e. they are at 80% and you are healing, rather than DPSing and letting them drop more).

One also has to note that the Crit damage+ means nothing to a healer from a healing standpoint (Healer DPS is another matter), so Lyrica's analysis for straight healing is on point.

The added bonus is applied to healing as well

You're going from a 5% chance at 1.5x, to a 15% chance at 1.6x to a 25% chance at 1.7x.

Astrologer priority is as follows from the folks I've been talking with on our server:

Spellspeed (until 700-800) > Determination > Piety | Crit

While I strongly disagree on the order, I mostly wanted to point out that you may want to reconsider DET placement. Determination scales very poorly for healers (approximately 200 DET = +30 average per 400 potency cure), conversely 200 CRIT would equal 5% more crit chance and a 0.1 added to the modifier (i.e. going from 5% at 1.5x to 10% at 1.6x). The average heals you are going to put out with the added CRIT floors the added with DET.

Item #2 has no bearing on healing because your heals aren't doing damage (unless there's research somewhere that indicates critted spells also get a bonus in their potency in a similar magnitude to damage spells/abilities/WS).

They indeed do.