Some of the things in this thread are really more deserving of proper threads to themselves (magic, technology, maybe geography and races). I'm not going to say anything here about them, because then I'd be here for hours writing. So, hum, precursor wars:
For a long time, another race, the bipedal horse-like Kiang (who, generally speaking, are proxys of Elves; magic-inclined, fairly nimble, and snooty as hell), were the dominant race, and enslaved Humans. Eventually, the Humans rebelled, and thanks largely due to some Humans who learned necromancy, they drove the Kiang to the deserts of Sapin, and eventually completely eradicated their race. The Kiang's ability to use magic to heal (and also to create false life [Golems], as opposed to the extended life of the skeletons) was lost as such. The necromancers were hailed as heroes, but as time passed, they slowly became tyrants, ruling over their fellow Humans with an iron fist. Or maybe more of a skeletal fist. Y'know. Another war broke out, ending with the necromancers killed and their brand of magic nearly destroyed; all that was kept was a few meager tomes locked deep within Sapin's magic academy. Damian and Roderick naturally found them, and in turn taught Lucy. I'm honestly not sure how the only other shadow mage, Bodhi, managed to learn it, though.
About four hundred years later, Draug enters the picture and we have the drawn out Estaria-Wuzeer wars. How exactly it went down (and, more prominently, how Draug actually died) depends on your decisions, but the one thing that's consistent is that Draug killed all of King Boris' offspring (of about six), except for one, who was still badly mauled. After Draug's death, the conflict between the two nations continues off and on for the next sixty years, but generally not much is mentioned about it, other than a few lines by Heath, Clair, and some others about skirmishes.
So, um.. question. Um... monsters. Random encounters and that sort of thing. Are they ever a visible nuisance to cities or travelers, or just the merry band of heroes? Are they intelligent? Can they be domesticated? Is it handwaved that all the gold they drop is from you selling their organs? ...yyeah, I don't have any particularly good ideas for questions.