War events used to be hosted on a unique cave map. The kage's would use the village points to determine which type of players they could summon into the arena to fight (i.e. Genin, Chunin, Jonin, Lv 50s). The village that won the war event would be able to purchase a black ceramic armor.
Then later on, this turned into a total village vs village war on the desert WZ map.
Now the latest one was hosted in Yoru's basement.
Personally, I liked the first concept the best, however the map needs to be slightly bigger, and the point system needs to make more sense. Rory would just make up random numbers like you need xxxx to put this. The points were used off of his head instead of based off an actual guideline. The black ceramic was a great reward, but having to pay for it after the win is a little tilting.