Post Credits Scene 2
The Scene: Fresh off of nodding to Alfred in that cafe at the ending of The Dark Knight Rises, this scene picks right up from that spot. Alfred has walked off and Bruce Wayne and Selina Kyle are actually waiting for Clark Kent, who approaches him across the street asking Bruce Wayne, I believe you wanted to see me? to which he responds; Yes, Im gonna need your help in putting a team together. For what? ...*Movie serious face*
Why This Would Work: Would clash together the realism of Nolans Batman films with the rather extended reality of Superman; help introduce the idea of them working together in future instalments and will also point towards the seriousness of the threat that could be faced in a Justice League movie as only a serious movie face can.
IN THE MOVIE SCENE 2:
The Scene: Lois Lane, in one of her frantic journalism conversations, mentions the situation in Gotham City and the apparent abandonment from the Batman.
Why This Would Work: One of the things Marvel did well in their crafting of a believable universe is have just off hand references to what else was going on; Agent Coulson in Iron Man 2 just mentions a situation in New Mexico (Thor) and thats enough to arouse intrigue and build this idea that stuff is happening everywhere. An also interesting link to this is TDKR is set 8 years after TDK, which was a direct sequel to Batman Begins which was in 2005; to by that logic TDKR is set in 2013, when Man of Steel comes out, so whos to say there isnt a reference to it anywhere? If you also consider that Gotham is the worlds greatest city could this film really not mention the goings on there and still expect to get away with a Justice League movie?