But I don't think it would be, though. He is mostly out of the picture now, and since repeated infidelities can probably be proved easily he would likely lose the house in a divorce. While I don't remember any specifics hasn't Amelie told him their relationship is over (although not exactly
why)?
So to me he is still a parent to his kids and can see them,
etc., but the only real
plot-relevant thing I see him as capable of doing is maybe publicly announcing Amelie's behavior (but thus proclaiming his own cuckolding to everyone he knows) and suing for custody of Stephanie on those grounds. [MC & Kylie are old enough that no Family Court would be likely to intervene and their emancipation would be far more likely.] If his rage were so vast he would be willing to go to any lengths to punish everyone (including himself) then this might be a possible storyline...but a really
dark and unpleasant one.
So to me he is a completely irrelevant side-character now that is pretty much unrelated to the story because that route would be so dark and unhappy that I just can't imagine XR making the choice to upend the tone of his game so completely. But I could also be 100% wrong. As I very often am.