That's a lot to think about, thanks. I get your points, and don't disagree (yet

). I thought it was clear W left because of the blackmail from Katie, but the timing is odd. He left after leaving Mon like that, when he realized he couldn't quit Leia, right?
Yeah, they were into shady shit, even more shady shit then connected teens normally do. All the siblings were raised very "hunger games", ultra-competitive, violent, and to see the world from a chess perspective, where you figure out the moves to make to achieve you goals. They're almost raised to be sociopaths, but still have a conscience (well, at least W and K do).
Dylan definitely caused the bad relationships between the kids, at least between L and K, W was more caught in the middle.