From the article:
One last point before we wrap things up: fans should pay little attention to Christian Bale's suggestion that he'd never star in a movie involving Robin. As much as it pains us to admit it, it's unlikely that Bale or even Nolan will stick around much longer than a third film. DC and Warner Bros. are likely attempting to create a successful franchise with the same legs as the James Bond Films, which means future films – especially ones involving Robin – will likely fall into the hands of different filmmakers and stars. It goes without saying that the franchise should only be placed in the most capable of hands.
That was the entire problem with the old series. I don't think Burton's movies have aged as well as we would have expected, but they're still good movies. The Joel Schumacher ones are terrible. What happened is that they continued making Batman movies because they (the studios) knew they were money in the bank, not because they thought they'd make good movies.
What makes the recent Batman movies so damned good
is the people behind them. Batman aside, Chris Nolan is making
good movies. The recent Batman movies are his vision of Batman just as much as Dark Knight Returns and Year One is Frank Miller's vision of Batman. (Please, it's just an example, let's avoid the derailing discussion of Frank Miller quality.)
The only way for any post-Nolan Batman movies to be good is if they get someone who has as cohesive a vision of what kind of Batman story they want to tell.