Feedback: you're leaving the warlock community out in the cold. Please communicate with us. We are extremely desperate.
We agree with a number of the core concerns raised, but don't have immediate solutions (or those solutions will take more time to design, implement, and test than the 7.1.5 PTR cycle affords). A couple of examples off the top of my head:
- Steady/predictable Ember generation suited the Destruction rotation well, and something important was lost in the course of unifying the class to use a single shared resource, but fixing that at this point isn't just as simple as rolling everything back to Embers.
- Mechanics like Demonic Empowerment and Soul Effigy are cumbersome to manage and while they have strong spec-specific theming, the actual gameplay of using them drags down their respective specs.
We're probably too reluctant to acknowledge problems for which we don't yet have a solution to present. But the fact that we haven't yet changed something doesn't mean that we think it's perfect as-is.