There are so many shadow priests in this thread defending their class and acting like they are fine.
Sure you are fine, if other classes had the same kind of utilities that you did, you would be fine. Relative to other casters apart from mages you are far superior. Almost every team you meet in arena these days have a warrior/mage or sp in them.
If utility doesn't make a class op, only one shot damage does then lets give SP's ice block, shield wall, cyclone as well... Almost all of the warlocks posting on AJ knew how op demo was and wanted it to be changed, and eventually glad that it got fixed, that was also because playing demo was not fun, but so many SP's here defending their class when they are clearly in a much better spot than any other class out there apart from warrior and mage. Try not to be so biased about your class please it makes a horrible arguement.
But you are right about one thing SP's dont need a nerf, other classes need a buff that can enable them to compete with the support of an SP. But also MD has to be about 45 second cd if you are shadow, thats about it.
This comment that other classes should have the same utility as shadow priests is such a tired argument. Why would anyone want there to be less class individuality in the game. You even go on later in the post and describe in a sarcastic manner that we should give spriests other class identifying abilities (which would obviously be a bad thing). If other classes should have the same utility as spriests, then give spriests a port cooldown and spammable cc like locks have.
It is true that most comps do have a warrior or mage in them - they have about 14% and 10.5% representation respectively. But spriests are no where near as common (about 6.3%). If you add all warlock spec representation above 2200, they in fact have higher representation than spriests (6.5%). These stats are pulled from worldofgraphs.com - I do not know if they are 100% accurate, but they do seem similar to what I see on the ladder myself.
You're applying a blanket statement that everyone defending shadow priests is defending their spec based on class bias, however there are a number of posters that play different classes that also don't think that spriests are overpowered (myself included).
If anything, it appears that you are suffering from class bias. Yes I agree that shadow priests are in a better spot than warlocks, and yes they are the second best caster spec in the game. But what are the alternatives? Elemental is basically nonviable as a pvp spec, and boomkin has insane damage during cooldowns but is otherwise pretty weak. So because shadow is better than two non viable specs and warlocks (first season I've been playing that locks haven't been amazing btw), then shadow must be overpowered? As an aside, I played both a spriest and warlock last expansion, and warlocks were clearly the better class (as I understand it, warlocks have been better than spriests in basically every season except the current one). Yet I did not come posting that warlocks were overpowered just because it was the better spec.
There are reasons that spriests have defensive utility at their disposal. They don't have spammable cc like some other casters have, and they don't have the ability to kite like other casters. Not every caster is the same, and nor should they be. What makes this game interesting is the differences between the classes, and I do not understand why posters want to take away the tools that give spriests their identity. And I am not saying that spriests are necessarily immune to needing nerfs. If flash heal was still as strong as it was before 5.1, then it would be too good. But as of right now, I don't really see it as a problem.