Young Justice. Fantastic animated series that ran on Cartoon Network from 2010 to 2013. Two seasons of well-written, if occasionally far too complicated for the ostensibly young audience it was aimed at, which ended with hopes for another season which never came to fruition.
After a very, very long delay, the second season is now available on Netflix in the US. And show creator Greg Weisman has this to say.
See, Greg Weisman does not have a good track record of series he's worked on lasting. Gargoyles, which was a fantastic series, lasted two seasons under him. (There was a failed third season/rebranding without him, but we will not speak of it.) Spectacular Spider-Man lasted two seasons before in-house politics brought it down. And Young Justice, though the second season wasn't as polished as the first, was still a fantastic show before everything abruptly came to an end.
But, Netflix has been rescuing shows that do well. And the long running story arc approach that Weisman effectively pioneered in children's animation in the US is ideal for Netflix binging. He, a seasoned animation professional (who is also writing Nightmask and Star Brand for Marvel) believes that there's a chance for a third season if the numbers are high enough.