Individually, the Avengers do have their distinct characteristics. Cap's the patriotic hero who throws a shield. Thor has a big hammer, The Hulk is a big monster, Black Widow's the women, and Iron man drinks a lot. They have those distinct physical tools like shields and hammers that can draw people in. I can see them being popular in the merchandising field. I had a kid I'd buy the one of those big toy Thor hammers the have now.