These ideas are lacking... Event Warzone is proving to be a major failure currently, and a faction could recover its bad reputation earned by killing everyone by shoveling crap.
We need events that are more consistent, that have a backstory and interactivity. Warzone could be better if it turned out to be a war between two sides, with a story like Vault City and NCR battle themselves for Redding's gold, the Hub rebels from NCR, etc. Then, both sides would enter in confrontation, and people would just volunteer to whichiever side they identify themselves with. This way, there isn't that foul gang play that happened in before. Of course, volunteers would be assigned the weapons that they can handle, and a brand new location could be designed for the war. Each side would need a limit for the number of players, to make things equal.
The warfield would be composed of traps, and all sorts of unfriendly features. And to top it, after the event, the winners' actions would change the gameworld for good. NPC's could just go spouting random floats about how the conflict ended, and there could be other consequences.
That's just a suggestion, so take it with a grain of salt