We saw Ferris Air a couple times in the past, they have been pretty good about making use of the broader DC Universe. Given how the Flash seems to be kicking off quite well I bet that CW is eager to do another backdoor pilot this season. Will they do The Atom or will they instead go for a different route? There was some talk last month about the potential Titans series on TNT sharing the universe with Arrow and Flash as well...
If Warner Brothers is smart they can pepper their IP across several different networks (either linked or not). Linked would be best, if they can manage it, as the Marvel Movieverse and now the interlinked ABC/Netflix offshoot of same has proven to be incredibly lucrative. Much more so than actual comic books.