All I can say is you know theyll change it from the original story.....Avengers, Fantastic Four, Silver Surfer, all the X-Men, even Spider-Man, and it would be a good opportunity to introduce Dr Strange.
They could. Its not out of the realm of the impossible. I am truly concerned the story will be a cluttered mess like X-Men 3 and the Wolverine flicks. The best adaptations were the ones that kept the story simple, and for one of the biggest epics in Marvel comics I see a lot of opportunity for failure due to the terrible Marvel movie epic track record.
It's nice to imagine, but the characters let alone the story won't be
exactly like comics. The characters in the film version Infinity War (the first part at least) will have
The Avengers (a new roster since it will change at the end of
Age of Ultron), Loki will be in it, and plus all the Marvel films tie in together it will most likely be with characters related to the Marvel Cinematic Universe we already know.....and as well as the ones we will encounter in future films. Such as
Dr. Strange.
It would be cool to see maybe another Marvel team pop up in part two. But none of them are even part of the MCU whatsoever. So unless
Spider-Man returns to Marvel by part two and becomes part of the MCU in some shocking and well done way, without ruining everything, than maybe....just maybe it could be possible. You never know what may happen by then.
All in all, I don't expect to see any close resemblance to the comics in the first film except The Avengers and the MCU characters, the main infinity gauntlet story line, and war with Thanos.