About the whole "banning ID's" thing, you'd also need to consider that people would need to alter their entire builds just to compete in a PvP war, just to circumvent those restrictions. In terms of rewards they don't need to be that substantial, as this idea is more of an addendum to guild-guild interaction and the benefits of territorial wars are already quite substantial. I do agree though that some kind of PvP competition between guilds would add a nice new dimension of fun and immersion beyond just fighting AI controlled mobs hired by defending guilds. Would also add another dimension of PvP besides just the Nether, which is kind of arbitrary at present. So I'd answer "Yes" but with some revisions, some minor, other serious like the ID banning thing. That just won't work. I agree some kind of workaround might be needed for mages rather than just banning them altogether with an option. Maybe in PvP wars they don't heal allies, just themselves?