5. Spider-Men

Spider-Men

This would be amazing to see, and unlike the majority of crossovers here, there are no complications caused by different studios, etc. When The Amazing Spider-Man 2 was released, franchise producers Avi Arad and Matt Tolmach stupidly seemed dead against introducing any alternate Spider-Men to this world, closing the door to plenty of fascinating and exciting spin-offs and team-ups.

One of the best examples of the latter is Peter Parker meeting Miles Morales, a much younger Spider-Man who took over the mantle in his universe when his predecessor was murdered by the Green Goblin. Launch an Ultimate Spider-Man series alongside the Amazing one and then throw these guys together in a movie and Sony will have a hit on their hands.

More important than that of course is the fact that this could rejuvenate what has become a stale franchise.