I think I've had enough of traps. We're a creative server, not a PvP server! We should be going around building stuff, not setting traps. I can tolerate traps that send you into lava, the nether or the end, but not those that send the victims to their deaths.
The worst offenders of all are people who abuse command blocks and command block carts on activator rails (you know who you are!) to this end. This is not the reason we give you operator rights, you know.
So yeah, for this I propose a new rule: No traps that kill players.