I feel like it's somewhat anti-lore to form a group like this, primarily since this group seems to be just rising up and declaring that they have this peacekeeping ability. It would be kind of like, instead of the formation if the UN being a result of the end of WW2, a bunch of chums from various countries just decided that they were going to form the UN, and sort of declaring it themselves with no existing power.

I'm not trying to shut you down, but IMO if a group like this were ever to be formed, it would have to be by the order of the Regalian Emperor