Although I liked Green Lantern as a kid, he was too powerful, thus became boring. Kind of like Superman. It never made sense that Superman didn't just go medieval on criminals. Dead Lex Luthor= no more world-threatening evildoing.
It’s not Green Arrow. They said it won’t be a hero they’ve already reintroduced (last year, they “rebooted” their entire continuity, and are still rolling out some of their, erm, retooled characters).
They said one candidate is a character called Vibe. Never heard of him, but the name sounds appropriate.