I guess it's more of "whatever works for you" thing - I like GHT. I don't understand that whole talk about GCD clipping or whatever. I first ran GHT with only .3sec cast time reduction, which coupled with my haste gave me .997 cast time on it. That turned out to be very annoying because having cast time so close to GCD is what causes you run into "this spell is not ready yet" so often. I put now 5 points into HT cast time reduction so now it's .82 or so (I swapped a couple pieces so I lost a tiny little bit of haste) and it's just fine now - it behaves like an instant cast and if you know how to queue your rejuvenations then it works exact same way.

Edit: about slag pot: are we talking 10 or 25 man version of this? In 10 you can do just anything you like and it's fairly easy to keep people alive through it. It's not the same case with 25-man where it's currently 6000 DTPS for 10 seconds while in it = 60000 / 10 seconds. In 10-man now it's 4500 DTPS = 45000 total. Assuming people are topped off and with 20k+ HP, in 10-man you need to output 2500 HPS while the person is in the pot, while in 25-man you need to output 4000 HPS and there is no way your hots are going to cover it. If you use Rejuv+Regrowth, they will get 2k (RJ) + 6k (RG direct heal) after ~3 seconds, and another 2 ticks of both for some 8k total - so you need to cast one more direct heal spell. In 25-man if you make them wait 3 seconds, they are 18k HP down.

Also, I found Regrowth to be a terrible idea for Slag Pot as in several fights Ignis would put someone in the pot just to immediately start casting Flame Jets so you get nicely silenced while casting your Regrowth and blocked for some more time, just long enough that the person in the pot is going to die. Also, what exactly you need to cast depends highly on how much health those people have going into the pot. Incidentally yesterday he grabbed our offtank while he was walking some adds around - that was fun...

My problem with glyped HT is that everything about it is inferior to a non-hotted nourish. Its HPM is lower, average hit is lower, and mana cost is higher. The only thing that is superior is its whip-crack cast time. My contentions are these:

In most situations where X needs a heal ASAP, nourish will cover the bill. There are relatively few situations where the .2-.3 second cast time difference is enough to mean the difference between a living player and a dead one. When those situations do come up, swiftmend and NS+HT are already baked into our healing style and are enough to handle them. If you're in a position where you feel like you need glyped HT to cope, then I think the problem isn't so much in slow heals but more in that something wrong is going on in your raid. There are no encounters balanced around having sub 1 second cast heals, and all fights can be managed with what we have already. To counter the "we aren't perfect, shit happens" argument, I'd like to point out that there are 1-7 other healers besides yourself, all with their own forms of "save me" buttons. If your raid is dying that quickly and all healers' buttons are on cooldown so often that you need glyphed HT just to make it through, you would probably get better returns by teaching the morons how to raid properly instead of gimping your healing. Glyphed HT is a band-aid fix to copious amounts of bad play in the raid. To counter the "I like it for that once-a-fight situation" argument, I say that that's fine, but I hesitate to justify something as permanent as a major glyph + a different spec for such rare situations.

I'm also wondering why this is being discussed again. Nothing has changed since that 3-4 page debate in PVE discussion thread, and all of the arguments here seem to be rehashing everything that has been said.

I agree with that, but even granting that, it does not void my argument.

Given that you did not use nourish when health deficits were high and would have not overhealed as much and instead used HT when it would have likely been 100% effective, I don't think that is a useful observation. I could just as easily, hypothetically, use nourish as the "save me" heal and healing touch in nourish's old place and point out that nourish didn't overheal as much as healing touch.

The glyph bonus is multiplicative so *1.20*1.12 instead of *1.32