At the very least, many of those before had fought their way deep into the astral world, shaking Level 11 existences, dying in spectacular fashion, stirring the Multidimensional Plane. In the ancient Age History Book, they left behind a bold and heavy mark.
As for Sauron, all he did was visit and intimidate some powerful Gods, sign a few useless treaties, and then wandered aimlessly across the Multidimensional Plane.
Other than "Pan-Plane Number One," a title that true strongmen scoffed at, Sauron accomplished nothing noteworthy before his death.
Moreover, relying on his high realm, Sauron borrowed a small group of barbarian men and women from his Heaven, promising to repay them tenfold, to return the favor as a spring gushing forth—only to disappear with no follow-up.
