What if Joseph Gordon-Levitt takes over as Batman?

So after watching the second trailer I began asking myself what is with Joseph Gordon-Levitt. From what I’ve found is that officially he is John Black a cop who is after Batman and from the set photos he seems to be doing nothing of significance, lots of standing around and chasing a motorcycle here or there but nothing that makes me go “oohhhh now I see why he was casted”. From what I’ve seen it makes me think that he is more of an extra than a actually meaningful character, which by all means might be what he is just some dude. But if I recall correctly Nolan made it seem that JGL was more important than that back when the announced that he was casted. Which got me to thinking what if there is something more there more than what meets the eye going on?

Ok so this is farfetched but whatever I think it makes sense.

After watching the trailers I noticed that Bruce is again behind bars. Now this could be just a flash back to the days in Batman Begins or it could be that once again he is locked up. But how could a stand up citizen like Bruce Wayne get locked up?

Just follow my train of thought for a second. Again this is farfetched and is just me thinking out loud.

Say Bane is in FACT the new leader of the League of Assassins (or Shadows like their called in BB) which means that ever he either forcefully took over after Ra’s “death” in BB or that he was Ra’s right hand man and since Ra’s is “dead” he is now the leader. If he was the right hand man then he probably will know that Bruce is Batman and from the trailer it looks like Wayne Manor gets raided by Banes people. So what if Bane kidnaps and imprisons Bruce to keep him out of the way for his destruction of Gotham and to make sure he is alive to see it happen.
In the trailer we see Bruce in a cell beaten badly and Bane is standing over him saying “When Gotham is ashes, you have my permission to die.” This makes me think that this indeed takes place in present day and not in flashback to BB.

Ok so here we are right now. Bane’s army has Gotham under siege, Bane has Batman locked up, and Gordon has been hospitalized. And when the people of Gotham need Batman the most he is nowhere to be found. So who will step up and help save Gotham and how?

So we have all seen the trailer with Gordon and who we all think is Bruce talking in the hospital room. Gordon says “We were in this together, and then you were gone. And now there's evil rising. The Batman has to come back.” Then Bruce says “ What if he doesn't exist any more?” then Gordon replies “He must... he must... “
But what if that isn’t Bruce at all what if the is John Blake. And for all those people who will say that is clearly the voice of Bale, remember it is just a trailer and how many times have a trailer shown one thing happen but in the movie that same scene happens totally different.
So Gordon tells Blake that Batman must return. And then tells him that batman is Bruce Wayne (come on Gordon has to know by now, he’s not that stupid) and since Bruce has been captured there has to be a new batman. Then JGL goes to the now vacant Wayne Manor finds the Batcave and puts on the cape and cowl until the return of Bruce. And at least in the comics it wouldn’t be the first time someone has taken over as Batman because Bruce couldn’t be batman anymore either due to injury or being “dead”.

Sure it’s a farfetched idea but it fits with the “Rise” theme. Bane RISES to power, JGL RISES as Batman, then Bruce Wayne reRISES as Batman to defeat Bane.

Again I know it’s a stretch but it could happen.