No offense, those were just the things i picked up.
Im currently looking through a lot of mods and most of them are so borderline unplayable that i grew quite sensitive to massive overhauls because too many of them just destroy more than they fix, mainly because the ai wasnt told how to handle the changes...
If you can pull it off, ill be the first to play the out of that mod
Btw., have you thought about light non-winter attrition in enemy lands?
It also struck me as strange as to why soldiers only desert and die of sickness when its cold...