I understand, but we could get a similar play style delving into other magic schools.
My biggest example is Shadow Priests eventually over the years started slowly progressing into “Void” magic and is what we now are farmiliar with, why can’t Warlocks take the next step and progress further into “Death” magic?, shadowlands could be the expansion to write the lore and can then incorporate a Dread Lich, classes overtime usually get more powerful moving on from expansions…
Warlocks I feel is truely the only class that’s has lost power, we use to have Infernals and Doomguards as baseline pets, got removed, we had Metamorphosis for 8 years, started in Wotlk, got removed.
Warlocks havnt progressed in actual fact we’ve gone backwards through expansions, Shadowlands could be the expansion where we gain knowledge from the Primus and further push the Warlocks boundary and go deeper into Death Magic, we drain life, use to drain soul for soul shards, it’s the next step for us.
That’s why I put in the Talent Suggestions to keep the new play styles, Demonic Consumption Empowers pets, Nether Portal (which needs to be buffed to see actual use) for the Swarm Build play style and Change Sacrificed Souls (never used boring passive) to a Talent which could pay homage to the Old Metamorphosis and the play style is direct player power, this is where Dread Lich Form comes into play, fusing Death/Shadow and Fel Magic together.
So we have a Talent for every play style and they can choose which way better suites them. Empower your pets (Demonic Consumption), Swarm the enemies with Demons (Nether Portal) or Empower yourself (Dread Lich).
Even now Warlocks have had the same Demons for 17 years, while hunters every expansion and patch get a endless supply of new pets to tame to personalise themselves progressing, Warlocks don’t, we are like the Black Sheep of the classes in Blizzards eyes .