I’ve played since beta. The beta, and I can say with confidence, Warlock destruction tree is a massive disappointment. In PvE i struggled to catch up with others on DPS even with similar gear and correct rotation. In Mythic+ dungeons, our aoe was some of the worst. In PvP, it was tough. Whilst other classes boasted how they just made a character and got up to 1800, we struggled to stay alive; warriors were hard to shake off, paladins we could not get away from, etc. With the latest patch, destro is two steps behind everyone else.
If destro is to work in pve, we would need -I call it Death Coil, to be on half it’s CD. Shadowfurry should be instant as it used to be with no more than 20 second cooldown. Etcetera.
I did notice that in this patch they made voidwalker much better at tanking. Step in the right direction I suppose but useless in PvP.