Which is why there are so many people disappointed with the very idea of faction war - there's no other option than it turning into a shitstorm. Even if it reaches a conclusion, there will be one faction losing more than the other as there are very limited possibilities for the consequences without threatening the concept of two factions and thus most of it must be forgotten. If it went by IRL examples and tho Horde was to pay reparations after SoO, the faction would implode due to lack of resources (just like the massive inflation in Germany post-WWI) and the whole concept of two factions would then follow.