Dynamic weather would be nice, take it a step further, say there was heavy rain or snow in an area, that would affect the trade route(s) (coastal and mainland) that are in that area and then on effecting the games economy, say a trade ship wrecked after a nasty storm and a few days later items from that ship appear near/on the coast for you to collect if you so happen to be there, or river floods over a road and washes a caravan down pulling all the goods down river.
dynamic weather events that effect local area economy, and hints/news of said event give you a chance to save lives or make a profit off another's bad luck.
$65 all I can afford.