Lets look at the series of T.V shows DC has put out recently, say the last 20 years....
Ignoring team shows
Batman; 4 (Counting Beyond and Beware, not counting Brave and Bold), both of them lasting for a good period of time
Superman; 1 (Superman TAS) Legion of super heroes is a team show
Green Lantern; 1
Among them, length wise Static was the only one that really got the same level of length and award. Out of them, unless they managed to pull off another dark horse win with Static, few can really generate the same type of story line diversity.
Could a DC hero have a series that does as well as the Batman series, the Batman lasted 5 seasons, Batman T.A.S was able to reboot itself successfully, and even Brave and the Bold, a show everyone seemed to hate, lasted 3 seasons. (As long as Superman, and longer than even Spectacular Spiderman)