4. Doctor Strange
The future is looking bright for Doctor Strange. The rumour mill has been awash with reports of the Doctor Strange movie, and now reports suggest that the script has even been written. Yes, Marvel are indeed pressing ahead with giving the character a large presence in their movie catalogue and having Doctor Strange guest on Agents of Shield, maybe next year, would be great publicity for the film (scoped for a 2015 release). Not only that, it would get the audience interested in the character, proving that he can helm his own movie. Doctor Strange's inclusion would definitely be a eye-opener for the Agents of Shield, as the humble Doc has a mastery of magic and a genius level intellect. It would be a VFX heavy episode if they chose to show him as a super, but it might also be funny and extremely worthwhile just to have him in the office as a consultant.