Why am I bringing this up? Mostly to flog my no-doubt Fix-It Fiction theory if Marvel-Disney wants to create the endscene that nobody nobody NOBODY who isn’t me or you, Dear Reader, will ever see coming: as Hawkeye and Black Widow go off to Budapest (Constant Reader Rockphed and others were right; this is one great way how that should go), show one last bit where an older Black Widow and an Older Captain America* watch them go off; and then older BW leans over Older CAs shoulder, and puts a line through an entry in his old notepad (in her handwriting, of course) that says Make sure I join the Avengers.
Fade to black. Watch the fandom freak out. Never bring it up again.
You’re welcome, Marvel-Disney. You steal this, I want tickets to the premiere.
*IT’S ONE DAMNED SCENE, EVANS. I KNOW YOU LIKE EATING REAL FOOD AND EVERYTHING AGAIN, BUT YOU CAN SUCK IN YOUR GUT FOR ONE DAMNED SCENE.