You get a peek into the lives of each character through Scarlet Witch and the controversial Clint Barton being married...well it worked! There was more Hawkeye love this time around and for good reason. He and Natasha are the only ones without any super powers. Not every hero has super powers.
You get great one liners from the whole team not just Stark, Thor or Cap.
"Watch the language." - Cap
"It slipped out." - Cap
"No one will miss him." - Hawkeye
Sorry, can't recall the rest at the moment but go see the movie, you won't be disappointed! Joss Whedon has done it again!