Tell me what you guys think:
CW? They're best left with street levelers. A Red Hood show could be good. Document his lost years and such. But as of now that's probably too similar to Arrow. I could see a Vixen show on the CW. Since most of their actors could be models anyway, it would work.
An entire network should be dedicated to it.
The lineup could go something like this...
The Question - Alien Conspiracies
Hawkman - Antique Roadshow
Booster Gold - Pawnstars
Sportsmaster - Worldwide Sports
Granny Goodness - Bitchin Kitchen
Green Lantern - How Its Made
Batman - CSI Gotham
...the possibilities are endless.
Definitely agree on Nightwing and Wonder Woman getting their own TV shows. I also think that John Constantine and Zatanna should be the main characters in a TV show. Someone suggested above that a Justice League Dark show would be good, and I agree, but with the rumors that Guillermo del Toro is making a movie based on that, I don't know if they'd make a TV show starring all of those same characters anytime soon. But if they just featured Constantine and Zatanna, I could see it having a real Supernatural-like vibe, which I guess could be either good or bad, since Supernatural is still showing on the CW. But it would be cool regardless.
For a cw magic show like supernatural, maybe do a Constantine solo tv show. Another possibility is a Timothy Hunter tv show. Cw can also try a show similar to alphas or heroes which can be dc related or not. Maybe do some justice society members as metas such as Ted Grant, Al Pratt, Ted Knight, Terry Sloane, etc. For Legion, can do it with star gates so aliens and human aliens from the United Planets are able to mingle with earthlings easily.
Would you intend for it to be just like other crime series, such as C.S.I. ,or more of a televised version of the Detective Comics that focused on Gordon. (If you read them. They're also collected in the Black Mirror graphic novel.) I like your idea, depending on how it's executed.