I like the statements posted for warlocks for 11.1 as most of them are just nerf reverts from SL and DF. I just wanted to state a couple more changes and ideas that i would like to see for the future.
Destro - At this point i think when it comes to rifts, we all just want to see DF S3 tier set bonus be added. I know its been said a million times but separating cata and inferno or making cata baseline. Make backdraft get 2 stacks from conflag.
Demo - I like that demonic calling is 20% again (i think it should be 100%). The new doom talent doesnt really change much as it prob still wont be good enoughj for a talent point. Personally, i think flametouched should be deleted and replaced with the Master Summoner PVP talent. Also made Umbral Blaze apply in AoE or swap Umbral Blaze and Imp Mother in the tree. I would like to see some new talents to the right side of the capstone part of the tree.
Aff - Aff is lacking in damage and QoL. I would love to see corruption take agonies roll when it comes to generating soul shards. With this change you can tune Vile Taint to be an actual DoT cooldown along with PS. Also make Oblivion cost 1 soul shard and while channeling our dots double tick or something, i love the idea of oblivion just seems bland in the form it is now.
Class Tree - Give a charged base KJC as we are the only caster to not have a way to cast while moving. Make gateway, demonic circle, shadowfury, and banish baseline and cook up talents that buff those abilities to put in the class tree. (Still want to see a capstone class tree that is called metamorphosis that functions just like soul shape from Shadowlands but we turn into our customized felhunter.)
Hero talents - Buff Malevolence back to 15% haste and take it off the GCD. Change seeds of their demise for destro back to proccing free bolts and RoF but they dont spawn the overfiend, but these free spells do count towards the total number needed to spawn the overfiend. Buff shared fate. Buff Soul Harvester and Hellcaller animations so we can have some more stunning visuals from those hero trees.