u/Bungfoo

The peni trailer had peni doodles over the "who's team will assemble next?" Screen

The hulk trailer had green gamma flash and shuri scratch marks

The only possible hints are the scratched out spider eyes and 361. Which are red herrings. People are looking too much into it. Not one prediction people made over the last trailers and logos have been even close to true.

The better question is who would doom have on his team that would play into the story mode. I believe it would be like minded amoral villains like magneto who offer great power and strength to challenge champion. I can't see carnage being on this team. He's too simple and is not the type to care about saving the world.