My server has been getting hit really hard with griefing, but I do not want to enforce a whitelist. So my idea, is to block new users from using TNT, fire or lava as these are what the griefers have been using. Then have people apply to get permissions to use these. My server is running the latest hey0 mod. I've looked all over, but so far have not found anything.
I'd also love to see this. Fire is great in a fireplace, lava makes for a fine "engine", and TNT makes for a great "launch-pad" to get to high areas --- but all of them are used so much for griefing... would be great to allow "trusted" players to use them but nobody else.