We've gotten used to the current lineup of Heroes on the Avengers and it's easy to assume that they will Always be the same group. However, The Avengers have had a pretty fluid lineup over the years and it shouldn't be any different for the Cinematic Universe. If the rumors are true, The team of Avengers we see now will NOT be in the 1st Infinity War movie. We will have a completely new lineup of Heroes.
"Who will be on the Team," you ask? Well, I've got an idea and I'd like to share it with you...
1. Doctor Strange
The Sorcerer Supreme will debut in fall of 2016. When the original Team of Avengers suddenly vanish (my speculation here,) Doctor Strange will head up a new Group to fend off the arrival of an otherworldly being wielding the Infinity Gauntlet- That's Thanos.
[Doctor Strange](movie:559685) is a natural leader and mentor to the younger heroes. His powers and leadership will be necessary to rallying this new team of Avengers. Look for Benedict Cumberbatch to have a pretty big role in this movie.
This one is the biggest Wild Card but if Sony gets their act together and allows Spidey to be in this movie (and part 2) I imagine the Universe will just explode from the sheer awesomeness.
It's too bad that Spidey won't be in the Captain America: Civil War movie but what can you say? Sony's Execs are a bunch of D!cks. Instead of making boat loads of money sharing Spider-Man with Marvel Studios, they would rather make "The Adventures of Aunt May."
I don't know who would play Spidey- I have a separate article that deals with possible replacements for Andrew Garfield, who pretty much sealed his fate with Sony by badmouthing [The Amazing Spider-Man 2](movie:508593) movie after it didn't do that well.
Look for Spidey to also have a big part if he joins- It's probably a requirement of Sony lending him to Marvel Studios.
Look for Ant-Man to be recruited into the Avengers in the post credits of his Solo Movie this Summer. It might not be Nick Fury that recruits him this time but either Captain America or perhaps Iron-Man/Tony Stark as a prelude to Civil War. Scott Lang would most likely join up with Cap like he did in the comics but Hank Pym will probably help Iron-Man.
Paul Rudd will play [Ant-Man](movie:9048) and be a part of the new team in Part 1.
4. Black Panther
T'Challa, The Black Panther will have a solo movie in 2017 and I predict he will join the Avenger's Team at the end of it. He will first appear in the upcoming [The Avengers: Age Of Ultron](movie:293035) as T'Challa before showing up (in costume) as the Black Panther for Captain America: Civil War. Panther will bring his strategic mind and cunning gadgetry to the team that will be sans Iron-Man for the first time ever.
Look for Chadwick Boseman to play him again in 2018 for part 1 of Infinity War.
5. Captain Marvel
I know [Captain Marvel](movie:949779)'s solo movie won't be out until July, 2018 but I believe they will debut her character earlier in part 1 of Infinity War. The story is too big for her not to be a part of it. While they haven't announced who will play Carol Danvers yet, Speculation is that Game of Thrones' Natalie Dormer (who also had a small role in Captain America: The First Avenger) will play her. Sounds good to me if it's true! In the absence of Thor, the Avengers will need someone Super Strong who can Fly!
So there you Go! These are my choices for who will be on the Team for Part 1 of Infinity War. Look for the Original Team of Avengers to show up (from wherever they went) in time to save the world for [Avengers: Infinity War - Part II](movie:2390833).