It must just be me but I am sick of all the X Titles and I haven''t been able to get into much after Civil War, Then again I am more of an obscure character fan so I was really into the Adam Strange Saga from 2004-2011, still my personal favorites comic wise. All I need from DC to be happy is a fun Science Fiction Movie with Adam Strange, a Time travel movie with Booster and a nice Crime movie with Martian Manhunter.
Which would be unfortunate as he has so much potential of handling his own movie, just as there are other comics that could never hold onto a series yet had success with films (Blade). Marvel has DC beat with their movies, but at least DC fans can say our comics are much better reading.
If done correctly this could end up being one of if not the best super hero movie. The best way to convey him is to go back to his roots from Detective Comics as John Jones, slowly working in his back story with Ma'alefa'ak as the main villain. Having this movie as well as a Flash, Wonder Woman, Superman leading up to a justice league film with Starro as the villian would be amazing. Now the reason behind not having Batman is the fact that Nolan has said plenty of times his Batman would not connect into a justice league movie and seeing how successful the series is I don't see WB remaking it just for a Justice League film. Green Lantern would be great in the film but to be honest Green Lantern is much better as a solo character as he mainly deals with space adventures. Manhunter Superman Wonder Woman as well as Flash makes the most sense in a movie franchise stand point as they all have very different origins (Superman and Manhunter have similarities but deviate from each other rather quickly.) and different personalities to mesh well in a Justice League movie.