Re: How can they keep Cap 3 fresh?
I like the idea of a spy-tech thriller like James Bond but more… advanced? I think they'll be able to incorporate the search for Bucky with whatever McGuffin (another Infinity Stone?), in fact, I expect Bucky to be on some sort of path of revenge against HYDRA, which will lead the CIA and Cap and Sam to intersect with him.
Crossbones will likely be working with whomever the big bad is, and maybe Sin. So thirsty for Sin to show up in this!
"Joss Whedon, Shane Black, Edgar Wright, James Gunn [and Ryan Coogler]… For as much flack as people give Marvel that's a pretty freaking great group of filmmakers. Kind of feel spoiled."