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. 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. This mod changes the realm divide event significantly. UPDATED 05 April 2012: The mod now works with FotS too!