You have no idea what a disc priest does.
The numbers they produce are not OP, the WAY they heal is just different to other healers.
Disc is not OP, disc is just doing something nobody else does.
Holy priest and Disc priest are NOT doing the same things.
There are not many fights in TOGC where you can just “get all your mana back with Rapture”, in fact, I’d say there are pretty much no fights where that can happen, except for gormok.
Disc is not the problem, Disc is really good, its too good to not take one, but PLEASE don’t make the mistake of thinking, that if disc was bad, the next best would be Holy Priest, IT WOULD NOT, it would be another shaman.
There is nothing HolyPr does that Shaman doesn’t do better, and no, Guardian Angel is not good at all.
Disc priest is good because they use shields, which is healing before the dmg happens. Nobody else can do that, nobody is competing with Disc in a raid spot.
Holypri are just aoe heal bots that are worse than Rdru and worse than Restosh. Holypri tank healing is also kinda wack.
If you take a fight like Valkyr - where healing is not capped by a full hp bar, always lots of dmg being taken:
You can see by wcl that holypri are just a little bit further ahead than Disc priests, but still a good 20-40% behind all the other healers.
Disc reaches a limit where it is useful, rdru, holypala and rsham are holding back most of the time.
Holypri just doesn’t have the PUSH.
You must not confuse disc and holy priests as being the same player.
There are double the amount of paladins as disc, and there are double the amount of disc than there are rdru/rsha.
There are 20x the amount of holypala as holypri.
If holypriest wasn’t hot steaming garbage, you would ABSOLUTELY see those paladin numbers come down and more holy priests.
People play what is the best, and holypriest doesn’t even get to see the podium, they are behind the curtain.
The only way to see Holypri see success before the expac is over is to accept that they suck, and start by fixing their god awful toolkit.
Lightwell is an offence to the players, absolute tragedy of game design.
If you fixed Lightwell, they would still be worse than restosh and Rdru, they need a good fat dunking in the buff cauldron.