In dc, after cancellation of a title, relaunch of the title is usually a reboot. Stormwatch had a near cancellation and that was enough to cause a reboot too. Simultaneous reboot event is about every 25 years.
A Green Lantern movie can be done like star wars. The green lanterns are like Jedi and they fight the yellow lanterns who are like sith. Maybe let the lanterns learn some kung fu too to make the fights look better. Wonder Woman can be done like the percy jackson movies.