Speaking of the Vulture...
I hope they don't make him a hero in IW2.
I actually wouldn’t mind seeing some villains fight with the heroes against Thanos. That would just emphasize the desperation of the situation and how he is the common enemy of everyone.
I think having ANYONE from a TV series show up would also be a good idea
Won't Toomes be in jail in the aftermath of IW - if he's not a pile of ash? Seems highly unlikely that he'd be fighting with the Avengers, especially with the addition of Captain Marvel to the mix. That would probably be one story line too many. Plus Peter Parker is dead, and he's probably the only one who'd consider giving Toomes a chance at redemption. But hey, if there's time travel involved, I suppose anything's possible.