Aff is shaping up to be back to the bad old days of Draenor - a single target specialist.
ShadowBolt is a massive retrograde step, it does not fit with the concept of affliction at all. It is very obviously a nuke, but the problem he is compounded by the fact that it's a weak nuke with a long cast time.
Now look at where aff should be strong: multi-target fights. I have no doubt at all that Blizz have taken far too much notice of the whines about how well aff does on council fights so they've put Writhe and Absolute on the same line, to make them mutually exclusive. The irony is totally lost on them that a pure dps class which lore indicates is the "king of dots" just will not be: that will go to hybrids, i.e. ShadowPriests and Balance Druids.
The AOE is absolute shit. Everyone and their mom has hard-hitting, instant casts. What have we got? Yeah, Seed of Corruption. Which still has a 2.5s base cast time and is still crippled by that ludicrous dependence on damage to explode it: and not just all damage, but the caster's own. Seed of Corruption is just weak, why does it need to have more shackles around it's ankles? They've nerfed Sow the Seeds yet again, oh wow, one extra seed! Seed's weakness mean it should be at least instant cast, as propel gear up it will become more and more worthless and you will hear more and more of that annoying "hey the thing you targetted died whilst you watched the cast bar crawl across the screen", and you'll be lucky to see one tick off those Corruptions. Plus, of course, Absolute and Embrace are also now mutually exclusive.
It applies Corruption? Who cares? It's not like anything is going to live that long to matter. Aff's AOE was strong because of Soul Flame, which was strong and got stronger the more targets there were.
What are you suposed to do going into a dungeon where you can't change talents? Who wants an afflock when you can take much more versatile dps classes who can do strong single target and strong aoe and have better interrupts/CC?
"Hey guys, I'm good at single target. honest! Well so long as I don;t have to move and so long as I survive cos I have no escapes or immunities and no speed boost without killing my health in the process!"
One of aff's biggest assets for high M+ keys was it's self-healing. Which has also been taken away.
So what you will have is a single target niche spec, mediocre to bad at everything else, locked in by it's talent choices. I'm willing to bet that even the single target won;t be that much higher than anyone else either, despite the fact that they aren't saddled with the ridiculous ramp times.
Agony's ramp mechanism should have been ditched long ago. It's an archaic hangover from the days when Wow was a much slower game. Everything these days is geared towards a faster paced gameplay, which invariably favours classes with fast, upfront damage and increasingly inhibits any class with ramp. At the very least you should have something like "On targets hit by ShadowBolt, Agony now reaches maximum damage twice as fast"
That would really help with stuff liek target switching.
I fully expect a heavy nerf to Creeping Death too. And Deathbolt, that's never gonna make it unchanged to PVP.