I would like to see in the Avengers sequel, Namor the Sub-Mariner declare war against the humans.
S.H.I.E.L.D calls upon the Avengers to help fight against Namor, and they also send in a robot name Ultron to assist them.
Ultron wasn't initially designed for combat, but that changed once Nick Fury convinced Ultron's creator Hank Pym that teaching Ultron to fight would be for the good of the world.
Captain America, convinces Namor that continuing to wage war against the humans would only cause destruction for Atlantis.
Even after Ultron stops fighting,his violent nature still continues to grow. Then the Avengers begin to realize that they have a bigger problem than the Atlanteans
Now here are the new additions that I would like in an Avengers sequel.
Johnny Depp as Namor the Sub-Mariner
Aaron Eckhart as Hank Pym
Olivia Wilde as Jan Van Dyke
Michael Clarke Duncan does the voice of Ultron
Ali Larter as Carol Danvers
Okay, so let the fan casting criticism begin!