Hey Andy,
I never had a problem with the legion. Like you things I didn't know just made more curious.
I guess the normal DCU confused me cause I had preconcieved ideas about it. All the media on tv from Super Friends, the various Superman/Batman shows and films. Plus my first comics were Marvel that IMO were friendlier than DCU...less continuity. (this was before Spidey clones)
For some reason the Earth 2 stuff just confused me. Seeing another GL who looked a christmas tree, a Flash with gray hair (not cool when you are 8), complicated Superman stuff...let's just say Crisis helped me understand things.
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Which mind you I am not saying it was a good thing...not sure DC needed a "reboot" but streamlining and explaining things sure was welcomed.
Jorge