I may be alone in this, but I hope this arc helps Sven out, too. I sigh whenever I see the dude pining for Faye, because remember how she treated you, Sven, even before you went and Done Fucked Up with the CMA chick? Yeah, that was Not Rad. It was in fact the diametric opposite of rad, it was Shitty, which is what you two were for each other. Angus is not, and she is actually growing, instead of pretending like she was back then.
Sven gots to get a new set of epic titties, even if he never forgets the Twin Wonders of the 70's, and maybe he can grow a little, too, get further redeemed. Helping his sister and Marty out would be a nice start. Especially since, even with all the damage his behavior might've caused, the Bianchi siblings do seem to care for one another.