Yes it does. The opening to the trailer is character driven. It doesn't just jump straight into the action.
You've got Steve in the gym clearly jaded and frustrated, taking it out on a punch bag. Banner in some shack in the middle of nowhere, obviously not please about SHIELD finding him. Thor talking to SHIELD and being apprehensive asking what they want from him. Stark in his penthouse being snarky about how SHIELD said he wasn't suitable for the Avengers.
All character moments. Not development no, but why would there be development or growth in a trailer? That is a stupid thing to ask for. How many trailers, ever, have had actual character development? All it needs is solid introductions to the characters and insights into what they are feeling. The trailer does that. Even with Black Widow and Hawkeye, who obviously feel out of their league.