I don't understand why the Disc proc rate is so high. Is it just to incentivize the healing cloak for Disc? That isn't really necessary. Presumably the DPS legendary won't even work for Disc, so people who skip out on the healing legendary will be trading the proc for, uh, ~300 crit? Not a contest - the healing cloak is vastly superior.
The disc proc rate is so high because disc priests were going to benefit the very least from the overhealing being redistributed simply because of how a disc priest works. Most overheals come from smart heals and Crits and smart heals critting. Now you take a disc priest, and all of their heals that crit, simply turn into an absorb via DA. So their actual overheal value is quite low because an absorb simply cannot overheal, it either gets partially used up, used up completely, or falls off and acts like it never existed.
So when the cloak would proc for disc priests the overheals we would have to redistribute would be a joke compared to say a resto shaman or a holy priest, hence my (assumed) reasoning for disc having a drastically higher proc chance than all other healers.
Unfortunately I still don't care about that I just care about having a 5% increase to healing more than all of you now since I have to stay disc being the only absorb healer in my ten man.
I see where you are coming from, but honestly at that point why even have disc. The backlash would be of biblical proportions. You say that overhealing is more out of control then it was in wrath, and you blame absorbs for that problem, and yet from what i'm told (didn't play in wrath) basically all disc did at one point was bubble spam. That sure sounds like a lot of absorbs to me...even with today's gear, consistent bubble spam=oom priest. Why are absorbs breaking balance even more then they did in wrath, then? Seems like there is another factor at play.
I definitely agree with that, and I'll add on by saying I think the other factors include the dps we bring via atonement being the mandatory playstyle, and the unique CDs we bring that blizzard has introduced since wrath. We only broke one fight in wrath and that was heroic lich king with the debuff and you needed 2 of us to do it and you better have had double solace trinkets to maintain the mana for that amount of bubbles.
We just have to much utility in all aspects that are important to the current model of healing which is what it really game breaking about the spec. I'm not saying you can single heal everything as Tiriel has said many times before throw a disc priest in heroic content and watch them flounder when aoe damage starts outperforming their absorbs we simply cannot keep a raid up like a resto Druid or a holy priest but absorbs become far superior because if the damage never comes or it comes in at a reduced damage it is easier on the raid overall.
That and the only limitation of barrier is the raid stacking.