Christopher Nolan may be done with the franchise, but possibly his brother could handle the spinoff?
Not as the director, which he has zip experience with. Why would you want him, anyway? Just because he's related?
No, because he co-wrote
both the "Dark Knight" movies, which I think should be enough to prove that he has some talent. I mean, seriously, didn't you know that? He's also the creator and producer of Person of Interest
on CBS, so he has some experience running a franchise. Not as director, no, but producers can be pretty important in feature films too -- note that Christopher Nolan is producing Man of Steel
, not to mention Bryan Singer producing X-Men First Class