No one but Bruce Wayne should be Batman (in the current timeframe, it's OK in the future of Gotham to have Terry McGinnis as Batman Beyond). I don't care what Nolan wanted, though the way TDKR ended, it makes sense to scrap the whole thing and create another new universe. With the new one, I hope it follows the traditional Batman story more (especially B:TAS). Not saying I didn't like the Nolan movies (though the first 45 minutes of BB is boring as hell).