You know what I want to see in Captain America 3?
Ta heck with world-saving plotlines and Cosmic Nazis and Dark Figures from One’s Past. I want to see an hour-and-a-half of Cap and Natasha sitting in a diner, talking about stuff over lunch.
That was the part that interested me about Cap 2.
Edit: Well , I suppose it’d be okay if they foiled a holdup attempt. But nothing more than that!
You might like this, then…
(A very good (IMHO, anyway) webcomic about Steve Rogers)
Charming! 
Tangential to this discussion: Cap > Supes
The “Super Cafe” segments on How It Should Have Ended are pretty much just superheroes sitting in a diner shooting the breeze. Here’s a collection of all of the Super Cafe segments.
And for Iron Man 4 I want to see Tony Stark and Bruce Banner working in the lab on some new energy source while Tony gives Bruce advice on picking up girls and Bruce helps Tony work through his “laundry list of character defects”, and then they knock off to go play skee ball and make fun of Thor.
Seriously, one of the best things about the Marvel Cinematic Universe is the focus on not only the characters but their interactions with each other. This has set it apart from nearly all other superhero fims (save perhaps the X-Men films) which focus on the conflict rather than characters.
Stranger
Step 1: Be rich.
Step 2: …OK, there really isn’t any Step 2.