In a recent interview with IGN, Joss Whedon confirmed Quicksilver and Scarlet Witch will be characters in the Avengers sequel. This is the first confirmed new casting for Avengers 2. Thor (Chris Hemsworth) and Black Widow (Scarlett Johansson) are intense contract negotiations and may not be in Avengers 2. There are a ton of other characters that have been Avengers over the years that Marvel could add to the cast.
What other characters would you most like to see for the sequel future sequels? What Avengers (or former Avengers) would you least like to see?
Of course, I would appreciate an appearance of founding Avengers Ant-Man and Wasp. For me, I would love to see Squirrel Girl in the Avengers. I hope we never see Starfox or Doctor Druid in the Avengers movies.
VISION. Give me VISION. Everyone seems to forget about him, but it was my favorite Avengers character as a kid.
The Vision is a great choice. To properly bring Vision to the Avengers, you need to tell the story of Ultron since Ultron created the Vision. That also requires Hank Pym (Ant-Man) since he created Ultron.