It's always fascinating seeing how things changed and developed during the filmmaking process.
And there's a lot to discover in these Avengers animatics by Federico D'Alessandro.
Like that tiny doodle of the Wasp - which is probably less telling than the hint that J.A.R.V.I.S. may lead to Ultron.
Via ComicBookMovie.com. Even more action sequence animatics for Iron Man 3,
Captain America, and Thor @ Federico D'Alessandro's Potfolio Site