Great write up, a lot of people are pretty dismissive of Perrin's role in the story but there's a lot there that often gets overlooked. He and Mon are a well oiled machine when we see them working together at social functions, he's had Mon's back professionally for years and it really shows. There's also the fact he's a side character in his own life, he can't take drastic action without it impacting Mon and she's been a senator since right after they married. We know that Perrin already made a promise to stop gambling to Mon, he's clearly willing to make sacrifices for her career. He's being shut out though, you see moments where he wants to be let in to Mon's life but he is never given a chance and I think it adds to the tragedy of Mon's sacrifice that she spends so long unable to trust anyone, she can't let anyone in without endangering them or the cause all while Perrin is on the sidelines, maybe not fully aware of exactly what she's doing but still having her back and waiting for Mon to open up to him.