Codewise this could be a nightmare, if so just ignore me for the moron I am.
1.Backup pfiles (very VERY important)
2.Disable New Player Creation
3.Elliminate PK range
4.Make it so one death and yer out (maybe you can still be on the mud but you're out of Armageddon)
6.Everyone logs into an area, when they die they get kicked out. Then we can just see who's left standing....I think "Ultimate Warrior Of AR" would be a nifty title to have :)