Another role switching idea - what if it was someone else and not Nat who fell with Bruce after the spear scene? So Nat was busy and someone else was free when Fury put the call out that they needed someone to face off with brainwashed!Clint. Would someone else be able to take Clint down, and how, and would it work the same way? How would Clint and Nat feel about someone else being the one to 'bring Clint back' as it were?