2. Scarecrows Titan Epidemic
The Story: Drawing influence from a sub-plot in the Knightfall series of graphic novels, Dr. Crane who of course escaped Arkham Asylum and didnt appear in Arkham City, has spent his time using his fear toxin to submit people in to fear zombies who do his bidding. He uses these servants to plant Titan release capsules across Gotham City and release it, leaving a growing army of Titan monsters, Scarecrow zombies and an unprecedented release of all Gothams most vicious and dastardly criminals who Scarecrow has immunized, just to cause the most chaos. Now all this would be a bit too much for Gothams Dark Knight and to best help him stop this potentially world epidemic; the Justice League.
Awesome Moment: Surrounded by Titan monsters, Scarecrow Zombies, Bane and Poison Ivy, Batman looks down and out when a giant green fist punches one out of the way; he looks up to see Green Lantern and Superman floating above him.
Reason This Should Be The Story: As open world as they come, as manic as they come and as awesome as they come when The Justice League arrives; this would be as wild as humanly possible and awesome in equal measure.
Reason This Shouldnt Be The Story: Its a Batman game and it should be Batmans battle, the inclusion of the Justice League would split focus from playing as Batman which is what has made the game so fun. If Rocksteady want to make individual games for each Justice League member though, thats fine by me.