Locks in 2s is not viable as mentioned
I totally disagree with this.
Personally, my favorite state of affliction was WotLK aff (specifically s8). In s8 our dots ticked hard and we were heavily rewarded for keeping them up. Because of this, we also had very strong single-target pressure. Nothing compared to the massive burst that shit like ele/destro/mage/hunter could put out, but just high consistent damage on a single target when we wanted it.
Fast forward to cata, they give us soul swap and fel flame. Now it's immensely easier to apply and maintain dots on multiple targets. This was the point in time where they gutted our damage and turned us into a mass spread-pressure threat. I hated this at first, and pretty much still do hate it.
Now they've removed SS and fel flame, and at its core that's a good change. Having a harder time applying and maintaining dots serves only to increase the skillcap of the spec. Soul swap is a faceroll, brainless spell, it should never have been put into the game. Fel flame is nice but for aff, it's nothing more than a crutch (although we REALLY ought to have something to cast while shadow locked). Unfortunately, when they deleted the easy-mode spells and made it harder to do dots, they forgot to give us back wotlk-levels of reward for those dots. It's there a little bit, but not really where it should be IMO.
P.S. not sure why you're saying aff isn't viable in 2s. I mean I don't see us beating any high-level god tier melee/healer comps (rets, ferals, dks), but that doesn't mean aff isn't viable. Those classes are just blatantly broken and (at least for rets and ferals) are even stronger in 2v2 than they are in 3v3. It seems to me like dampening creates a favorable environment for aff. No one's going to die anyway until dampening is stacked pretty high, and once it's at like >60% those dots start to hurt pretty badly and even with gutted fear we can still create more windows for our healer than most classes can in 2s. I think it'll be playable, if for some reason you want to do 2s.