Marvel's Potential Thriller FranchisesS

Hawkeye
The Pitch: "Mr. & Mrs. Smith, but with spies instead of assassins."
The Explanation: While Hawkeye's been kicking around with the Avengers, Defenders and even Thunderbolts for years, the ideal Hawkeye movie should avoid all that and skip straight to Jim McCann's recent New Avengers: The Reunion mini-series - Make Hawk the former criminal gone straight who has to deal with discovering that his former spy wife isn't such a former spy after all. Action, intrigue and marital deceit - it's almost as if you wouldn't even need to mention that Hawkeye is good with a bow and arrow at all.
Must Read: New Avengers: The Reunion #1-4 (Collected edition out September).

Marvel's Potential Thriller FranchisesS

The Winter Soldier
The Pitch: "It's The Manchurian Candidate with cyborgs!"
The Explanation: Ignore the comic version's association with Captain America - He was originally Cap's WWII sidekick Bucky, and took over as Cap after Steve Rogers' assassination a couple of years ago - and focus on the character's origin story: An American soldier, saved from near death by Russians only to be brainwashed and given cyborg implants before being used as an assassin during the Cold War, struggling to break free of his programming. How could that fail? Just get rid of the long hair he had in the comic.
Must Read: Captain America: The Winter Soldier volumes 1 and 2.

Marvel's Potential Thriller FranchisesS

SHIELD
The Pitch: "Everything you've ever wanted James Bond movies to be... but better."
The Explanation: It's Marvel's premiere spy agency, made up of grizzled veterans of wars both Cold and World, keeping the world safe with gadgets that would make James Bond jealous: Flying cars? Artificial intelligence decoys? A floating helicopter city headquarters? Even their terrorist nemesis organizations have cool-sounding names: AIM (Advanced Idea Mechanics)! Hydra! You'd have to try to mess this one up. Or, you know, cast David Hasselhoff.
Must Read: Nick Fury, Agent of SHIELD by Jim Steranko.

Marvel's Potential Thriller FranchisesS

Agents of Atlas
The Pitch: "The A-Team does Mission Impossible on a much larger scale."
The Explanation: A resurrected FBI agent inherits a terrorist organization and decides to use it to save the world from itself. Oh, and his best friends include a talking gorilla, a siren, a robot and a nice Jewish boy for Uranus. Jeff Parker's wonderful series repurposing old characters from Marvel's pre-Fantastic Four days is funny, smart and, while it may not seem like it at first glance, exactly the kind of thing to make a movie out of. Give it to the Coen brothers and see what happens.
Must Read: The collection of the original 2007 Agents of Atlas series. Although you wouldn't go wrong with the current monthly series, either.