I like this. No signal, just him watching over the city.
I would love for the ending of the trilogy to end this way.
-All the events of TDKR come to a close, Gotham is finally safe. Slow shots of the aftermath of all that has happened due to Bane and the LOS. Last shot of Batman, tired, bruised, exhausted after the final battle. Camera pans away from him and into the sky. Screen fades to black.
(If any other loose ends need to be tied, it happens at this point, similar to the scene in BB where Bruce stands over the remains of the manor with Rachel)
Screen fades back in, its night time and the first shot is of a newspaper at a newspaper stand with the headlines stating something along the lines of "1 year after [BLACKOUT]Gotham Rogues stadium Massacre. Has the city begun to recover?[/BLACKOUT]" and then maybe below that a different headline that states "Gotham crime continues to drop" (Just to allow the audience to know that a year has passed and that the condition of the city has changed to a positive thus far)
The camera starts to pan up the buildings of the city to the top of a high rise, camera swings around to the other side of the building where you see Batman perched atop, calmly surveilling the city. He has a new suit on, Its a clothed outfit, similar to the one in the picture above^. (With crime down, and the crazies no longer running the streets, he has no need for the extra armor)
Suddenly the Batsignal goes off in the far sky. Batman stands up, heroic music goes off, and he jumps off, midway through his fall, he equips his cape, it switches to glider mode and batmans last shot is as he rises in the air, past the view of the camera, and all we're left seeing is the signal in the sky.
Screen turns black and the word "The Dark knight Rises" is on the screen.
Credits roll--
Also, It'd be cool to have Gordon Narrate what the dark knight has done to Gotham, similar to how TDKR ended as all the happens, up till the point of where Batman jumps off the high rise.
I think this Would be a great way to end the trilogy, and even though I don't agree with a clothed/spandex suit in the movie-verse, It would be cool to have at least one shot of that at the end, and leave the rest of what happens thereafter to our imagination. I'm sure that would at least please the fanboys who complain about Nolan's batsuits.