[Taqwus]

Late era's nations tend to be less healthy, conceptually -- Agartha and Ermor being fairly extreme cases, with catastrophes also having affected Abysia, R'lyeh, Atlantis, and other nations. Fantastic beings are fewer, bloodlines have become diluted, humans have supplanted Those That Came Before, magical phenomena have become corrupted, and so forth. Technology is higher, with heavy armor and weapons being more common. More steel, less bronze. One water nation even becomes a land nation.

Fun depends on tastes, really. High-bless strategies and massed archers are generally less overwhelming in late era with fewer extremely-powerful sacreds and greater use of shields, for instance.