Sub-Mariner and Aquaman in: "Regicide at High Tide!"

So, the speculation is over and now the Justice League movie is a reality, to be filmed back-to-back with Batman Vs. Superman, or whatever they wind up calling it.  The next big question will be casting for the rest of the JLA members.  Will Aquaman even be a part of the film, though?  His underwater milieu makes him one of the tougher superheroes to pull off in live action, but he is a founding member of the Justice League, so it would be a shame not to see him included.