After going crazy thinking about it, I had a bit of a breakdown on ffxivRealm about this. Ultimately I decided to go Crit/PIE because it had been working really well for me in the past, but my full rant is here if you're interested;
I've been really torn on what to meld, and the deeper I explore into it, the more uncertain I become, so I'm hoping to get some insight from you guys.
Crit/DET/SS/PIE
First let's look at common healer secondary stats. When I first accepted the fact that AST plays mostly in Diurnal, I decided to build around Spell Speed due to the changes making it impact the potency of HoT tics, but after playing around with it I found that I just didn't like SS and I couldn't feel the impact of it when I healed. Since then I've been Crit/PIE and VERY happy with the build.
Now obviously PIE is always good, but with how fantastic MP management is on AST in 3.2, I'm wondering if I'd be better off not focusing on it as much. As for DET, I was a DET whm at 50 because it really just felt like stat build made little difference, so I might as well go for dependability. I've heard that DET measures up better to MND then any other stat, but based on experience I'm still favouring Crit. I've also heard that DET hasn't been scaling well on healers so I'm not sure what to believe.
I guess at the end of the day I feel that, with the exception of SCHs unique benefit from Crit, the aforementioned stats are all really a matter of player preference. But now we get into the more complicated territory
Accuracy
So first I'll start off by saying that I like that SE is pushing healers towards healing and away from DPSing, but at the same time I'm not thrilled with our loss of accuracy. I don't believe a healer should be obligated to DPS in casual group content, but in an endgame progressive raid I feel that each player should be encouraged to make the most out of every ability they have, and like it or not DPSing is built into the healers design out of necessity for us to progress through the game. So when I'm in a progressive endgame raid that's designed to push me, I want to be DPSing in some impactful way, even if it's just for a few seconds here and there.
So with that in mind you'd think I'd be all for stacking ACC. But on the other hand as an AST, I'm the primary healer with the sch (or even whm) being more valuable as the parties DPSer and often times I won't DPS at all after the pull until I'm more comfortable with the mechanics of a fight. ADDITIONALLY, idk much about melding, but the caster accuracy caps in Midas Savage are somewhere around 560—how close can I actually get to this via melding? If my hits/misses for DPSing are still going to be heavily RNG based, then how can I justify attributing stats to ACC which ONLY affects DPS when I can impact my DPS AND my healing using a stat like Crit, or DET? I want to hit my target, but I also don't want to funnel a bunch of stats into something that will only help my DPS, when I can pick a stat that'll have a much larger overall impact on what I do. This is a very frustrating predicament for me; I see the value in ACC. I want to be able to DPS and this is the best way to impact that and I know that my DPS matters, but the value of my DPS doesn't come into play very often and there's so much more value to be had from other stats overall.
HALP. WUT DU.
Edit:
Oh right, it was also recommended to me that I get some VIT due to the raid-wide damage from Sephirot ex. But sitting at 14100 outside of party, that seems a bit excessive.