Warlock has received a grand total of 0 playable class cards this expansion.
The Warlock already got great flexibility in decks due to their Hero Power. I also agree they didn't get too much, but it doesn't really doom any of their current decks. The most interesting card of theirs might be Dark Bargain because there is no single card removal that actually removes 2 enemy minions (Twisting Nether and Deathwing aside). If the meta does slow down, I think that card has a place.
If anything, Rogues got seriously shafted. I don't think they got enough support for a Control archetype despite Anub'Arak. Cutpurse might be their most impactful minion, but it has to stay alive a turn. It's going to be Oil Rogue and Pirate Rogue, but it's hard to say if Pirate Rogue will be any good otherwise, it's just more of the same. Rogues are not very exciting at all.
High impact cards are most definitely there and it's unfortunate not every class got them.
Shaman: Mistcaller, Healing Wave, Ancestral Knowledge
Druid: Mulch, Darnassus Aspirant and Living Roots (1 mana choose). And Aviana.
Hunter: Acidclaw+Dreadscale, King's Elekk (2 drop with Joust draw) Powershot, and Ram Wrangler for their control archetype, much more exciting than any Rogue control.
I think only the above 3 classes truly got really exciting cards. The rest:
Paladin: Mysterious Challenger (6/6 with secrets), Seal of Champions (their version of Velen's Chosen). And a bunch of weird psuedo removal.
Priest: Holy Champion (solid 4 drop at last), Wyrmrest Agent (2/5 taunt if running Dragon Priest) to pair with Twilight Guardian.
Mage: Effigy. Not so much other things, but possibly Coldarra Drake and Fallen Hero.
Warriors got relative crap with the exception of Varian.
If Warlock, Rogue and Warrior get any deck types, it'll probably have to come from the unique neutrals for TGT.
Cut: Looks like my opinions are more or less mirrored with Suikama's.