I had such high hopes for this spec. When they said it was gonna focus on demons and summoning them i was very excited. And what did we get? summoning dogs and imps which only last 12 secs.
This is from the website ''Demonology Warlocks are the masters of demons, summoning them forth to do their bidding. With the Skull of the Man’ari in hand, they are able to command and empower the greatest of these malefic beings''. I don't think imps and dogs are the greatest of these malefic beings.