Re: Once Nolan's trilogy ends..
^ It's just called "Man of Steel" btw. No Superman in the front of it and Nolan has been very hands on including re-writing the script himself a couple of times. He also personally hired Snyder and his brother and David Goyer wrote the script. Nolan seems like the type of person where he's very hands on and cares about the jobs he undertakes. I very much doubt that he took on the Executive Producer title for the reboot for ceremonial purposes. If he wasn't interested he would have just walked away after his trilogy was finished.
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Ignoring the The Last Stand since 2011.