I don’t know if this is intentional but implosion doesn’t produce demonic cores as it should (at least not to me and not on a training dummy). I know there are a lot of topics about the demonology warlock and how he needs a major dmg buff and an actual system about our demon control (like DKs, monks, hunters have) but i hope if all the demo locks out there fill the forums with complaints maybe blizz will do something about it.
To be honest i enjoy the extra tankiness and extra cc that the demo lock can bring to the fight ( i m a casual pvper bgs, skirmishes, etc) but the bugs of the spec make it so hard to invest in it.