I figure some rules should be implemented:
- No one can play as the CL of Uesugi, Yamana, Hokosawa or Ouchi, Daimyo and below only. (Perhaps you could compromise and say that no one can play them unless their main opponent is also human. Wouldn't really be viable for Uesugi though, maybe one of the two unruly vassals could play that role, Masatomo/Kagenobu, don't know if you can play as another player's vassal.)
- No ninja assassinations of player clans.
- No ninja manufactory destruction until 1550 (Later, earlier?)
- No subjugation of the AI or No subjugation of the AI until it reaches a certain, weak point, say 3 provinces?
Merely suggestions.