drothgery said:
Also, actual salt mines to send prisoners off to...
Mmm, salt.
I think the best thing about the area, as a campaign, is that you really have an opportunity to make weather play a large role in the campaign.
During the winter strong storms come up from the south (Nor'easters), and lake effect snow pummels hits the mid-region. Also, Syracuse is one of the snowiest cities in the US, and Oswego (north of Syracuse, on Lake Ontario) is known for ice storms as well as excessive amounts of lake effect snow.
During the spring, there's often heavy flooding as the snows melt, often extreme in the southern areas, around Binghamton, but even as far north as Ithaca and Cortland. In 2006, the Susquehana rose so high that it flooded parts of Binghamton. It turns large streams into small rivers, and makes all rivers very treacherous to cross, especially due to debris.
During the summer, it can get fairly hot, though it seldom gets excessive. On a clear day, it can be nice. On a cloudy day, it can turn muggy and uncomfortable very quickly. Also, of late mosquitoes have been somewhat of a problem in the area - perfect for a plague or general sickness to hit.
Fall is by far the most beautiful time in the area, though at night it already gets cold. It also tends to be fairly windy in the area, at least in my experience. It's probably the mildest of the four seasons, IMO.
I've rambled a bit, but my point is the area provides a unique option to make weather
very important.