Have bans that are administrated in Battle, Siege, Rageball, and DTV all form one ban pool. A ban made in one server transfers to all the others in the pool.
Then have a separate ban pool for the Strategus Battle server.
Bans from the separate pools do not affect each other.
I think this would be a good idea because Strategus is hard enough as it is. You have to spend hours of time recruiting members, getting tickets, getting gold, trading, buying/selling equipment, and strategizing. Let's say a small faction finally gets an army ready for battle after all these hours it takes to just be viable. Now, they have one leader that is confident, capable, and has a microphone to lead the battle. Let's say this leader gets banned the day before because he and his friend team killed each other in EU_1 or maybe they jokingly called each other my old friends, who cares, no harm to anyone either way. Stupid bans happen about things like this all the time.
Now this whole faction can be fucked and put under stress just because of the actions of an in-game admin being hyperactive thinking he's the savior of the server and the moral police. They've lost their leader for the battle.
That's not really fair to the faction of the person banned, and the person himself.