I feel like people are being a little too hard on the choice. Sure Alan Scott isn't the most well known lantern any more, but that doesn't change the fact that he's still the O.G. He's been around even in modern comics and hardcore fans, the ones most likely to cause a shit storm when there precious continuity is altered, are definitely familiar with him. And honestly, who else could they pick? Wonder Woman is too obvious, Batman has his boy ward which is already questionable enough, Green Arrow and Black Canary are a major super couple, and we all knew there was no way in hell it was gonna be Superman.