What Is Important Long Term

Perceptions At The Time

Very Important: The Crisis On Infinite Earths.
Less Important: The Swamp Thing/Crisis Crossover, dealing not with the main event but only with its spiritual consequences.

Very Important: Justice League of America becoming Justice League International.
Less Important: Morpheus visiting a JLI Embassy.

Longer Term

Swamp Thing led to The Sandman. Both are permanently in print and inspired the Vertigo Imprint. A page about pre-Crisis monitoring of super-beings is edited out of Swamp Thing reprints without detriment to the story.

The Crisis led not to a second fifty years of good individual DC Comics stories but to a pointless annual Company-wide crossover culminating in a mere twenty years with more continuity-changing Crises. The Justice League reverted to "of America" and the JLI is immortalised only in The Sandman.