Suggestions!! :O!
1. Save files: Each player has three 'save files'. When you start, you can say "/switchsavefile x". Upon the game being saved, it saves only to the one you're using.
2. Auto-save: Can be enabled and disabled. Every ten minute tick, it autosaves to whatever savefile you are on. You can activate or deactivate it by saying "/autosave"
3. Regeneration: Every few seconds, you regenerate health. It goes faster by a 30th of a second every level.
4. Nerf heal/selfheal for god's sake: Maybe make it heal for like 10% of your current health, and the same for anyone else.
5. An auto-kicker that kicks a player if they kill more than five other players under three minutes.
6. no more instant-kill monsters: I'm not the only one that agrees that instant-kill enemies are a pain to avoid :P