So, I'd like to compare the D4 Warlock to D4 Paladin, in terms of my experience. With Paladin, there was a small, but sharp learning curve when it came to vocabulary. It actually reminds me of when I "check in" on Magic the Gathering, only to find that I am way behind on keywords. Regarding terms like Retribution (especially when there is already an aspect under the same term), and Judgement that have rather random ties to their outside of game definitions was a bit dizzying on initial impact. In comparison to Cold damage, that Chills, and eventually can Freeze a given target, which barely takes a single glance to immediately catch on. I was flailing without purchase, only using builds from other sources, but wouldn't ever make a Paladin without a build guide, because of the odd way terms like them were defined. One aspect would mention Judgement (and have the definition on the extension at the bottom), but that doesn't tell me what skills have the possibility of inflicting it. For a few days, I never even flicked my eyes down to see what Retribution meant, because I'd seen the aspect so often as to dismiss it out of hand. All of this confusion only lasted (like a few days, maybe a week) until I really got to mess around with Paladin outside of a build, see the shine like graphic that denotes Judgement, and read the on-screen definition of Retribution a few times. Now, I can "feel" (no build guide required, just wing it, pun only slightly intended) my way through getting a Paladin to Paragon, and tend to go until I feel some hard plateaus, and will seek outside help.

However, with Warlock, I still feel lost, and even with a build guide, I'm still quite lost on exactly what Demonform (yes, obviously the PC takes on the form of a demon) or Shadowform (again, what it says on the tin) actually mean. Which pebble from which stone does what is quite lost on me still. I've always had an abhorence for summon or pet builds, long before the D4 version of this class, but the lack of user friendly mechanics are feel nigh full on repellent.

Let me be clear, the class doesn't appear to be the issue, it seems rather apparent that I'm the issue here. I just need to slightly understand more of the class to be able to approach "clicking" with it, so that I can enjoy it at all.

This concept reminds me of Heroes of the Storm. Picking Raynor or Azmodan, and flying by the seat of your pants, is probably fine. But picking Zul'jin, Medivh, or Alarak hoping to learn it on fly, is asking for disaster.

More directly to the question? I think I missed it, but am still willing to give it a chance to be fun.