Realm Divide Mod v2.0
UPDATED 05 April 2012: The mod now works with FotS too!
This mod changes the realm divide event significantly. Instead of a low initial diplomacy hit which adds up every turn by -5 points until you get a -200 penalty, you get a moderate initial hit (around -55 on normal difficulty) which gets reduced every turn by -4 points. That way allies and factions you have good relations with may stay on your side and diplomacy doesn't become impossible after the realm divide event.
The mod also contains some minor diplomatic adjustments: financial gifts and giving away you children as hostages both have longer lasting diplomatic effects (reduction of the effects each turn is now -4 instead of -5).
NEW: Very small realm divide effect version! This version of the mod was requested by some people and reduces the diplomatic effects of the realm divide event even more. USE EITHER THIS OR THE STANDARD VERSION!
Unzip the archive and drop the pack file into your ...\Steam\SteamApps\common\total war shogun 2\data directory. The pack is a movie files and does not need to be enabled. To deinstall just delete the pack file.
Many thanks to Taw for releasing his file converter for Shogun!