Seriously? That's it? You'd think they could include Ant-Man and Wasp, at least. You could even use a variation on the MA canon for their backstories, so they could be introduced semi-jointly. And if they're trying to find Avengers who've had previous movies as much as possible to save on backstory, I imagine Spider-Man could be added in. She-Hulk should totally be included, too, because she's awesome!