I know a way how to do this. Download this and use wse launcher.
http://forums.taleworlds.com/index.php/topic,324890.0.html
Its still working.. I know its for 1.166 but for me its still working even if i have 1.168
You can set corpses in the settings.ini file, but u must remove the ; at start of line. In the game you will see that your corpses are set to 0, but they wont dissapear. You will have exactly that number of corpses , you set in settings.
I know this topic is old...