Looking into the map structure, I came across this:
typedef enum WEATHERTYPE {
wtNONE = 0,
wtRAIN,
wtSANDSTORM,
wtSNOW
} PMS_WEATHERTYPE;
Now, in is this stored in raw text, like above, or is it in two bits for every polygon? If it's the first, could other types of weather be added in with ease? For instance, "wtDRIZZLE," "wtDOWNPOUR," "wtBLIZZARD," or "wtFLURRIES." Those would be nice and easy to implement, as they don't require new graphical files.
Just wondering, that's all.