The problem with Green Lantern post-Hal has been the way that they got rid of Hal. The powers to be at DC decided that, just because sales were low, no one cared about Hal (instead of what it really meant: that the book was poorly written and drawn at the time). Therefore, they turned him into an insane mass murderer, in a badly written story that ignored the character's 40 year history as hero. And people didn't like that. So they kept trying to redeem Hal, kill him off, bring him back as the Spectre, etc. And each new idea simply built upon that same old flawed story premise. So of course it has never worked.
