I've been seeing a lot of Justified/Avengers crossovers, or maybe it's another movie, but it's that 'verse, because there's quite a bit of Tim/Clint, so you're not the only one comparing the two of them. I don't know the Avengers universe all that well, myself.

It took me some time to get into Wincest, but it was the first slash I'd ever read, so I guess I'm immune to the taboo of it now. In fact I wrote a Sam/Dean story for a porn challenge last fall and the premise was that Dean was complaining that their sex life was too vanilla. I don't know how many readers pointed out that incest is not exactly vanilla, and I hadn't really even thought about it, lol. So yeah, deep immersion, I guess.