I just went back through my copies of the return of the original Legion stories. Right from the JSA/JLA Lightening story to Superman vs. Earth Man, the Adventure Comics backups, and the rebooted series, up until the new 52 this was excellent. It was like having the old Legion back (well it was having the old Legion back).
Why did DC have to cancel the comic? A year ago they should have introduced a new creative team and maybe they would have saved it. Really, I am a Legion fan from the seventies and eighties, and I miss the DC Universe without them in it.