Thank you for that information. As far as using PS on a Tank, would the 5% reduction in threat be an issue? I am not sure how the mechanics works with that.
I have actually never, ever seen the tank lose aggro from PS. Of course, that may be because I never do it early (before the tank has established aggro). I used to worry about that and check omen before casting it, but I don't even check any more. The threat reduction seems to be more of a theoretical concern, and while there may be cases where that threat drop could matter, there definitely aren't many in practice.
The thing about the threat reduction is that it's only 5%, which is almost never enough to switch aggro. That has a bad side since if a DPS pulls aggro, PS will not likely reverse that. Without an iceblock, feign death, or something, that DPS is often going to die with or without PS, so it can be a waste to use it there.
The bigger risk with PS is that you won't use it as often as you probably should. In addition to the "OMG, the tank is going to die" moments, it is good to consider with:
- some stacking debuffs
- healing debuffs (reducing damage is a great answer to an inability to heal)
- healers picking up add spawns
Obviously if you can dispell a debuff, that's better, but you have to get into the habit of thinking about using pain suppression or you won't use it.
How much are people actually using flash heal in disc specs now? For Ulduar PvE healing I find that now that shields do not have an internal cooldown and coupled with the Pennance Glyph I have enough other buttons that I want to press that Flash Heal isn't particularly attractive for raid or tank healing.
That's a great question. It's still early, and I think flash heal will continue to be useful, but I already find that shield is filling a bit of the niche that flash heal used to fill in addition to increasing the availability of a borrowed time hastened greater heal. So I do think there will be more shields and less flash heals compared to before. There may also be a side effect of more greater heal usage in some cases, although with penance glyphed, I suspect greater heal will only be needed when we really need to crank out some HPS. In other cases, penance on CD will suffice.
Nevertheless, you're sort of suggesting a flash heal for renew trade, and I don't really like that tradeoff. Flash heal is still a very quick and cheap heal, and you need the right kind of healing environment for renew to be very useful. I almost always run with a druid (even on 10 mans), so my bringing renew doesn't add a whole lot to what we already have in raid, while flash heal does help. But others might be in different circumstances where renew might make more sense.