And from your description, I might have been wrong in assuming Green Lantern was ever a good character to base a movie on. I still have no sense why that character ever became popular. At best, the Green Lanterns have the same problem that the Jedi do - intergalactic cops aren't inherently sympathetic, so you still have to do the work of making them sympathetic. The PT is an object lesson of the train wreck you get when you don't.
Which is what the movie got so wrong. Green Lantern, at least in my opinion, has always been at its best when it focused less on Hal Jordan and more on the various members of the Corp. Despite being the "main" Green Lantern, Hal has always been the dullest. He's just a traditional hero, and only ever had any real depth when he was famously paired with Green Arrow. Even that story was mostly Green Arrow showing him just how wrong most of his views on the world were.
The best Green Lantern stories are the epic space opera ones. Characters like Guy, crude but loyal, John, bitter and tortured, Kyle, thrust into this by fate and must overcome fear instead of being fearless, or the many other interesting alien members of the Corp. What about a character like Soranik Natu? One of the previous owners of her ring was a villain who conquered the planet with it, and who is seen as Hitler by his people, and the symbol of the Green Lanterns as a swastika. Her struggle to deal with the hatred she receives from her own people for wearing the ring was a compelling story in the comics. Hal? Hal is just boring and lifeless compared to all of these other people. He's Mr. Perfect.