IESB.net tells us they caught up with Ben Affleck and asked him if he would be interested in a Daredevil sequel. Here's a clip:
Ben would consider going back to Daredevil just as long as Fox would negotiate to tell some of the darker storylines. He would like to see a big screen adaptation of Kevin's graphic novel that included "Mysterio" or maybe even "Born Again". He believes that these story lines might me a bit obscure for 20th Century Fox and may require some negotiations.
You can watch Affleck say these things himself in a video interview at the link above (language alert!).