The twist may end up that none of those villains were real and they were all illusions.

Yeah, when you put it that way...Of course. Because if the creatures were real then Mysterio would actually be a hero.

Those two are the illusionsI hope Sandman isn’t included in that if the rumors are true. One of Spider-Man’s more well known villains being nothing more than an illusion would be super lame. Especially seeing as he wasn’t even a proper character last time we saw him.
Hydroman and Molten Man I’d be cool with. Neither are that major of players in his rogue gallery. Wonder who will be the air elemental.
Edit: Let it be known, I really like this idea, and it’s a perfect story for Mysterio and could offer some great character stuff for Peter. Just wouldn’t like making some of Spidey’s popular and good villains nothing more than illusions.
DanielRPK saying Saturday for the trailer, but apparently he's wrong about the Avengers trailer. Not sure if the funeral had anything to do with that or it's an excuse. I still think he's legit though.
At least he's more credible than Spiderman2o29 haha.
I don’t think we will get Mysterio in the trailer. We will get an image of Jake but I think we get a silhouette of a fishbowl through smoke at best.

Knowing Sony, They will probably show Spider Man being alive, and everyone will riot that they spoiled Avengers 4 on social media
I mean the name of the movie alone kind of spoils it no?
This.I think people are making the marketing out to be a bigger deal than it is. Even Sony can find a way to work around Spidey's "death", they aren't that incompetent. And even if they do show a bit too much, it's ok, the GA is smart enough to know that Spider-Man isn't gonna stay dead.
io9 reached out to both Sony and Disney about this problem created by Infinity War’s plot. A Sony representative would only say the studio will work with Marvel to figure out the Spider-Man strategy.
https://io9.gizmodo.com/thanks-to-infinity-war-marvel-may-need-a-new-strategy-1825787133