Am I mistaken in remembering that Bendis said something like once the identity of the second Ronin was revealed, that the person would shed the Ronin identity in favor of another?
And that is beside the quote of him saying that the Ronin identity could be used in the future as a mechanism for characters to start fresh after abandoning their IDs.
Clint Barton is going to take Captain America's identity.
Allt he clues are there. Look at how he rants on about how Cap meant the world to him and such. It's pretty obvious what's going to happen, just like it was pretty obvious he was going to be Ronin. Everybody keeps looking for the infamous red herrings when the story is pretty simple.