Harry's already obsessively jealous of Raimiverse's Harry for having a dad who loved him. Finding out this other Harry has a kid of his own to love and take care of will make him similarly jealous. But you're right, that would definitely spur him to cure himself, because fuck his own upbringing, he's going to dad the fuck out of whatever kid he ends up having!!

And yeah, I'd love to work towards trauma sharing!