I was scrolling through the comments and saw reincarnation ...I freaked out a little! :P I feel like one of the problems with the reincarnation plot is that it's hard to tie everything together? Hahaha idk. I'm trying to write a Clint/Nat reincarnation AU too and I feel like what works for me is making a list of when (and where) I want to write them, and absolutely(!!!) sticking to it.

As for your other WIPs, the mashup sounds really interesting. :D