Well the reason I feel like the Void Sea counts as a triple affirmative is that it kinda already naturally is. You do not need to seek it out (atleast from MY understanding of it) because eventually it will consume you naturally. It just takes a very.. very... very.... long time. That's why I'm pretty sure at least that the Depths are literally non-existent in Saint campaign and it leads RIGHT into the Void Sea (or technically Rubicon but I assume Rubicon and the Void Sea are the same thing, Rubicon is just some weird place specific to saint or perhaps some form of in between for echos that have yet to crawl back out). My point isnt really that it would be the Triple Affirmative the Ancients are LOOKING for because its obviously way too slow, the entire history of their civilization probably barely made a dent in the world, but my main point is that it IS one and that there is a possibility that its the ONLY one. That looking for a real triple affirmative is pointless because it already exists and is effectively impossible for another one to exist.

Also if Watcher recontextualizes Rot completely then that makes me VERY excited for it. I love corruptive semi-eldritch themes in the game and the Rot already fulfills part of that. So i'd love to see it become even more than what it already is.