I do have a roadmap that shows the antagonists for each main story episode except the very last one. Very interested in your theory, though!
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Its nothing major, hence hypothesis rather than theory. I just believe that given how pervasive one antagonist's acts of dickotry are if we resolve one reason to despise him we shall find two more in the next update. I call it the "Villainous Plot Hydra Hypothesis". Apologies for being vague on all of it but i don't know how to do spoiler blocks and i don't want to spoil. I would be very surprised if anyone who is up to date couldn't figure out exactly who I am talking about.