I felt that the new trailer had more of a lighter feel to it than the first one, which isn't a bad thing. In fact, it made me even more excited for the movie. The only thing I'm wondering is how much of the events of Age of Ultron will play a factor in Ant-Man's story. (Assuming that it takes places after AoU, that is.) It could be really cool to see some of the aftermath from the Avengers 2 affect Ant-Man's story. 

What is this?  A man for ants?

It's a movie that Marvel slapped their name on. That means everyone is going to watch it, and if you don't people will ostracize you for being pop culturally ignorant.