But even there, GL/GA can hardly be considered to be innovative or a trend-starter.
Point taken.
But this is well off the beaten path from what you reacted to in my original post.
GA, and to lesser degree GL, have been significantly changed and continue to show the effects of the social relevance period. Not only is this idea of relevance not dated nor obsolete, but it's actually expanded and deepened its hold on the comics industry. As another poster noted, this has been to somewhat lesser effect over the years.
What was my key point is the real world fads, which indeed have expiration dates, influence Marvel far more than they do DC.
GL/GA wasn't a reaction to a real world fad nor does the aftermath of it show the obsolescence of such fads.