The Green Lantern animated show just got cancelled, plus the Green Lantern toys sold poorly, maybe Hal Jordan is not what the fans want? They can`t make the fans like something that doesn`t interest them.
Maybe they should go with John Stewart or Kyle Rayner next time if there is a next time.
Same with the Flash movie would be better off with Wally West then Barry Allen.
Honestly, that does not surprise me. The show was utterly bad. I hated the cheap animated style they used and the stories were completely flat and boring with only very few exception.
Hal Jordan is not the problem. Marvel has proven very well that even an unknown or not that popular character can always gain success and popularity to a very high degree. I would not mind seeing any of the other Lanterns either as most of them are quite dandy or even nifty. The problem is the production and not the character. The entire GL-universe is exciting and knows no limits whatsoever.
Personally, I like Hal Jordan and I'm glad DC got him back from Limbo and made him the main character in the GL-Universe again. I might just be nostalgic, but I prefer to see the original silver age GL being in focus. Plus he is a cool guy with flaws and everything. On the other hand, they've destroyed the character so much, a clean cut might just be what GL needs.