I agree with so much of what you said but want to pull this out in particular. Wolfgang and Rajan go through a lot together in the short period of time they have. They bond quickly. Who know what might happen long term with the three of them but love for Kala, mutual respect and affection make it totally believable to me that Rajan would be willing to at least explore it. And I think in some ways this is the real beauty of the show. That Rajan and the other non-cluster characters can, through the existence of sensates, be more like our sensates - opening their hearts and minds to things they never thought possible. To me, this is what the show challenges its viewers to do as well.