Team villains
I'm really curious if each villain will represent one of the other teams. I'm kinda hoping they lean the following if that's the case:
Doom:
While often thought of as fantastic four related, is very often an avengers level threat.
Carnage:
An easy fit for Spider-Man and seemingly what was teased in the last trailer.
Scarlet Witch:
This would work if ghost rider's team is paranormal related in its characters (blade, moon knight, etc.)
Which leaves the X-Men villain. First thought is Magneto, but I could see him being in DLC, kinda like how Akuma is always dlc in Street Fighter. You know he'd sell a pass. That makes me want to see them do a rug pull and put Cyclops/Phoenix cyclops there. He had a history of playing the bad and it would definitely go against the initial expectations for Cyclops.
Just some ramblings