I'm not in the alpha so I can't comment firsthand, but does it seem like the Affliction "identity" is being tied in to being the tankiest of the Warlock specs?
I know they're trying to make Warlocks in general the hardiest of the cloth casters like they used to be, but it seems like the talents and artifact traits for Affliction lean that way much more so than Demo/Destro. That definitely ties into the way Affliction was (or was able to be) back in Vanilla and BC. Apologies if this is a totally redundant point that's already been discussed.