All (bad) jokes asides there is a new rumor report, via Collider, claiming they are hearing the GREEN LANTERN reboot might focus on more than just one Green Lantern. In fact, they mention Hal Jordan, and John Stewart in their headline.
"Keep in mind that the movie is still in early development and a lot of things can change, but we’re hearing that the new Green Lantern movie will focus on more than one human Green Lantern.
"...[T]he franchise will continue to focus on different Green Lanterns and never on just one, so really the Green Lantern movies look like they’ll be more about the Green Lantern Corps, which is an interesting approach."
With the Green Lantern Corps protecting solar systems and galaxies across the comic book universe, it makes sense to focus on several in the Corps as opposed to a single Green Lantern for the longevity of the franchise. This way the franchise can expand beyond one hero and focus on several of the heroic Green Lanterns.
Again, this is just rumor right now but it's a really cool concept and a way for Warner Bros. to grow the GREEN LANTERN franchise.