Hello there, a while ago I was looking everywhere to gather all the information necessary to figure out whether I wanna give shadow a shot or not, considering all the pros and cons of the current iteration of the spec.
It's been a while since our "HUGE" rework as it was promised for 8.1; and I have not seen any big class/azerite changes in a while which personally to me it indicates that we're hopefully past the point of checking mmo-champion 24/7 to figure out whether blizzard has decided to stir the pot once again over night, and buff all the "bads" and nerf all the "goods"; this provides me with a chance to give some information to people who are wondering where shadow stands right now.
1- General questing, WQ, soloing rares and similar stuff:
So, shadow has a good, above average speed when it comes to clearing WQs, while using "Misery" I easily manage to pull 6-7 mobs and just run in a circle and pull more while they die one by one. There are 2 things that can make this process easier, firstly Vampiric Embrace and secondly Void Shield pvp talent. These 2 tools are so op (one is a CD, the other one is a passive) that you would never die if you're pulling mobs 1 by 1 using Vampiric Touch (Misery talented).
We are super weak in terms of soloing rare mobs, we definitely don't have the power to solo a elite WQ or atleast it'll gonna be super challenging.
2- PVP
Shadow stands in a pretty decent spot in RBG right now (As usual). I am around 2k and so far my experience has been that Shadow is still easily topping the meters. Introduction of "Greater fade" is SUPER huge. I'm loving this talent, allowing you to re-position, get out of harm's way and keep spreading your dots. if your tactic requires you to go for maximum spread pressure, I suggest getting the Auspicious Spirits talent while using the Psyfiend on the target that the team wants to kill. There has been multiple occeasion that I have killed another target just cuz of spread pressure while my team managed to kill the "main" target that I had my Psyfiend on. If your dps are not super good, spec into SW.D
My experience in Arenas is very limited, but as far as I've been seeing the streams, shadow is doing a little worse after reworking of EOI; however it still is a viable option for a few comp. (Arenas players out there please lemme know what you think about the SP state in arenas)
3- M+
Aight, I'm loving the changes of 8.1 and what is has done in regard to m+. With the rework of Thought Harvester, Searing Dialog (slow), and the reduction in insanity drain, I actually feel like I can compete with other dps, and no longer feel like a burden on my team. Our utility is still lacking but we have some cool ones, a precisely times VE + VEruption can literally save your tank if your healer is CCed or something. You can do some very cool stuff with you Mind Control (example is giving that water shield to your teammates which gives them 75% damage reduction in tol dagor, so you can do a huge pull), and shackle undead is not the best but still something to be noted. With proper azerite trait you can do moderately well in single target and do great in sustain AoE. (I am very very very optimistic for season 2 as we'll have our hands on azerite gear with both single and AoE traits on them: I'm looking at you Mantle of Skyterror)
4- Raid
We were not useful at all when it mattered most (progression). We lacked in every department when it came to Uldir, the bosses were not designed in our favor and even tho that some bosses did involve long execute phase (Taloc, Ghuun), frequent spawn of adds that would last enough for us to dot up (Vectis), we were mostly outshined by other classes who had huge and great burst. Uldir in general prioritized burst so much that didn't leave much room for us to shine. Considering the fights in next raid tier tho, I am expecting a great demand for SPs and Warlocks. SPs are fine in Uldir after changes while having good gear, but still we suffer from frequent movement that most bosses force us to have.
5- Play-style
Controversial subject.
I'm not gonna dive into this subject as people have discussed what needs to be changed in Priest forums over and over again, you can read both sides of the argument when it comes to void form.
Conclusion:
I'm not a doomsayer and I'm also not naive. Rotation is cluncky, dots are not as strong as they should be, no crazy CD, burst is very limited, bluh bluh bluh...
Shadow has flaws, serious ones, but you are not playing shadow to top meters(unless in RBG, you're a god there), it is a very challenging spec with alot of punishment if you mess things up, but for people who are tired of super simplified stuff that many other specs offer, shadow is the right destination. You need to enjoy the challenge, you need to get pleasure from dpsing near what you sim for, and you need to love looking purple in order to enjoy playing shadow priest.