PvP needs consent
A fight is fine when both players agreed, when you're defending yourself, in an established rivalry, or in an organized event where joining counts as consent. PvP is off inside the protected spawn square, 401 × 401 blocks around 0, 0.
No spawn-camping, no chasing someone back from their grave, no targeting new players. Staff roll back items lost in a fight nobody agreed to. Loot from a consensual fight stays with the winner.