Revendreth is a land of dark secrets and gothic spires, mostly shrouded in darkness, although there are a few places where light has broken through the dark clouds and seared the earth. Ruled by the Venthyr Covenant, Revendreth is not a place where souls are usually hoping to be sent to.
Souls sent to Revendreth are of those who were prideful in life or have flaws that prevent them from being useful to the other areas of the Shadowlands. These Souls are brought to Revendreth to atone for their sins and prepare for redemption - Through unimaginable torment inflicted by the Venthyr. One such soul that has found himself in Revendreth is that of Kael'thas Sunstrider, who has to pay for his sins in life.
However, despite being aware of their role of stripping away souls of their sins, the Venthyr are slowly succumbing to their own pride, leading to a leadership crisis within the vampiric tormentors.
The Brokers are a faction separate from the Covenants and the Maw, sort of soul-traders, that can move freely around the Shadowlands. In the wake of the recent calamities, the Brokers have taken this chance to capitalize on new opportunities for profit and perhaps more. They are similar in appearance to the Ethereal faction from multiple expansions, and the team’s comments lead me to believe they’ll be just as shady and manipulative throughout this expansion as our old friends.