Spiderman, Wolverine, Iron Fist, Wasp, Ant Man, Black Panther, Vision, Ms. Marvel, War Machine, Red Hulk, Valkyrie, Nova, Mockingbird, Luke Cage, Scarlet Witch, Quicksilver, She-Hulk, Doctor Strange, Falcon, Namor, and Spider-Woman should all be added onto the team in Avengers 2.
I voted Ms. Marvel. I don't think she'll be in Avengers 2, but it seems possible that she could be in another sequel.
What's wrong with Ant-Man?
Edited: Which Ant-Man are you talking about?