John/Crowley could really be interesting. I’m honestly intrigued as to how that dynamic was handled because it never would have pinged by radar. I’d like to see how the fic did it tbh because it seems very odd to me. (No hate, it’s just not something I ever would have considered!) 

Kevin/Balthazar seems like it has all kinds of potential to get kinda wild, I think. I think it might be interesting to see Kevin later in his life, after he was living in the bunker and loosened up a little, interact with Balthazar. I’d be so fascinated by whatever they chose to say to each other. That could certainly get interesting.