I often hear and read about a need for a Green Lantern reboot and while I think that is true I believe much must be reconsidered before another attempt. This is my case at why John Stewart should be the lantern that is glorified on the big (or little) screen. Now, I have never been and will never be the "black power" type of person but honestly, The only way Hollywood can get it right is by going the John Stewart route. Since we have established a Hal Jordan I say be true to the comic and Segway him out. In this case I guess it wouldn't really be a reboot but also not really a sequel either.
In the comic, the guardians chose John as a back up for Hal after Guy Gardner was hurt. By the way, lets just keep Guy out completely. Of course Hal didn't like the choice the guardians made but the wouldn't change their minds on his account. Stewart's first mission with Jordan did change Jordan's mind. (Read Green Lantern vol. 2, #87 (December 1971/January 1972) On another note John's story arc is in my opinion much more interesting than all the other lanterns.
Let's look at employment before the Lantern Corps. Hal Jordan was a pilot. Weeeeeeeeeeeee! OK, John Stewart was an architect and a U.S. Marine. Guy and Kyle are not even worth mention. Haha.
And how stupid is Guy Gardner's costume?
Sorry, but of course John has more combat experience and better ring constructs. I would also like to see Katma Tui. She was murdered by Star Sapphire aka Carol Farris. Now I'd really love to see Blake Lively duke it out with Zoe Saldana or Kerry Washington.
Would The Lanterns work on the small screen? I love reading fan fiction, and one day I came across a page where someone had written a story called Lantern Corps. The idea of the story was John Stewart fighting in Iraq and gets transported to Oa and is surrounded by the guardians. He's told about the Lantern Corps and then beamed into a dark room on a cool space station just outside of Oa's orbit. There he meets Kilawag and trains. I can see that as a weekly show.
As I end this I must make mention of one Hawkgirl. I think (if I can get all mushy for a moment) that the John and Shyera love story is legendary. I'd love to see it on the big screen. Maybe ever the Hawkgirl, Vixen, Lantern triangle. Oh, that would be sweet for the JL movie.