Personally I was more excited to see J.K.Simmons voicing him than I was seeing Ketheric in Moonrise.
Because even in the Early Access story it was no surprise that Ketheric Thorm is the Drow General waiting for us in Moonrise, since both Ketheric Thorm as the "General" and Z'rell as the 2nd Drow Chosen have been heavily referenced, hinted and talked about through in-game letters, books and NPCs in Grymforge and Moonhaven (Blighted Village). So wasn't really a big deal of a reveal, at least not to anyone paying attention to all the lore bits and pieces in Grymforge.
The game outright confirms this subtly since it's all connected to eachother in ACT 1 and it was even
deducted easily ages ago before the trailers even started dropping.
I do think they should keep Z'rell and the 3rd Drow under wraps though, otherwise seeing them might lead to... more interesting speculations that prove true.
