2. The Frightful Four
I think it's about time we had a superhero group versus supervillain group in a live action movie - and what better way to start than with the Fantastic Four going up against the team considered to be their antithesis? The Frightful Four have had many members over the years and many incarnations as a result. The original quartet was Wizard, Sandman, Trapster AKA Paste-Pot Pete (yes, really) and Medusa, but other prominent members have included such stellar foes as Hydro-Man, Titania, Thundra and even Deadpool. There are so many possibilities and there is so much potential with this idea that it could be tailored to make the team a perfect counter to every single member of the Fantastic Four - something that would be great to see in a movie, with each individual hero having the responsibility of taking an opponent out. Having a full team to deal with would be the ideal distraction for the Fantastic Four while Doctor Doom put together his plans in the background. In fact, it could even be part of the story that the Frightful Four are working for Doom on his behalf.