With a very long road of production looming ahead, many decisions regarding attachments of main character roles for the "Justice League" movie have still yet to be seriously considered. However, with "Dark Knight Rises" Christopher Nolan reportedly turning down the offer to direct the film, many comic book fanatics are clearly wondering who will be taking the directorial helm for the future Warner Bros. and DC Comics flick?

For a movie that is slated to take over the box office on a large scale, one could only presume that somebody of high caliber will don the creative role. 

According to Panels On Pages, James Cameron and Steven Spielberg are two such directors who should be seriously considered as serious front-runners, amongst others:

Having a slew of thrill ride movies under his belt such as "Terminator," "Titanic," and "Avatar," revolutionary director James Cameron would be a great choice. To top that off, it is also reported that Cameron was even playing with the idea of entering the superhero genre as early as the late 1990's.  Though as of late, the 58-year-old is alleged to be concentrating on the "Avatar 2" sequel.

With a plethora of superhero movies seeming to dominate the big screen, it is hard to believe that none have been directed by the one person who seemingly monopolized the world of successful film-making throughout the 70's and 80's, Steven Spielberg.  "E.T.," "Jaws," and the "Indiana Jones" series are just a few of his many action-packed hits. 

Although comics may not be his forte, the 65-year-old clearly has the mind and experience to assure that fans would be leaving the theater overly satisfied. 

Writer Will Beall is said to be currently working on the "Justice League" script.  He is also known for his ABC show "Castle" as well as highly-acclaimed future release "Gangster Squad." 

"Justice League" has no set theater release date at this time.