A little confusing right. Just a thought on what could take place in the next batman. I was thinking that it might be cool if the Riddler was actually a major part of this movie. It could go down like this. Gotham keeps getting these major crimes that go down and the criminals sign is a riddle. Ok thats standard riddler stuff right! Heres the twist.
As the movie draws out you never get to see the riddler. All the goons and maybe a second big villain are all over the place, but they are all puppets to the riddler. Later on Batman gets closer and closer to the riddler, He keeps getting lured in by him is more or less how it is. Its a creepy sinical movie where batman realises that the riddler has been the joker the entire time. But its too late. Even the entire dark knight movie including the jokers death was part of his plan to make him think hes dead etc.