Party War

We have Guild War where a guild battles another guild and Mission War where the two nations, Procyon and Capella, battle out in Tierra Gloriosa. I've been thinking if there is a possibility of having a Party War. Right! A party versus another party, unlike GW and MW, in a party war, a party can compose of members from different guilds and can either be Capella, Procyon or one who has not completed the nation quest yet. Up to a maximum of seven members each party. The battling system is just like any guild war. The party leaders will negotiate on the rules.

I do not assume that there is no such system existing in Cabal. But, if there is none, this could be another way to spice things up in Cabal. A friendly party war... or what do you think?