Maybe, just maybe ... a Directors Cut DVD of the Green Lantern will be released, and will be awesome. And once everyone is on board with the awesome Green Lantern version, the sequel can commence.
Aside from Bat-nippl- err, Green Veiny suit, a lot of the problems in GL could have been fixed in post production. Sure the CGI was kinda meh (especially Ryan Reynolds disembodied head floating through space) and the actors were phoning it in ... but a decent narrative would have made the whole silly mess at least palatable, imo.
Easy example in the first 5 minutes. You start with the HUGE exposition explaining exactly who/what Parallax is. Then Parallax escapes and kills Abin-Sur, who just barely manages to send a message to his buddy Sinestro: "Parallax." To which Sinestro replies: "huh?"
It's jarring, as an audience member, to spend time learning about what's going on and then have the characters in the movie NOT know what's going on, literally 2 minutes later. That whole exchange would have been better without the exposition at the beginning. That way, while Sinestro doesn't know what Parallax is, neither does the audience (not counting the geeky fans who already know everything) Easy, simple, and allows a bit more empathy with the character. Especially as Sinestro butts heads with the Guardians about info regarding Parallax.