You could disable crafting recipe.I have a small server with a few friends. It's a private white listed server. I learned about the dollies and their ability to move monster spawners a while ago, but didn't tell anyone about it. Because the second we can do that, we can start doing crazy shit with them and grind rooms. However there was a chunk corruption issue, and one of my friends had to move his base. We used world edit to move the buildings themselves, but then he had to move the contents of his chests. So I told him about the dollies to make it easier. We agreed to not move spawners with them, and just use them for chests. Now he's wanting to move spawners, and thinks we should agree on a number of spawners we can all keep around for grind rooms... I don't like this idea. So if I ban the diamond dolly, then they can't be moved (at least we wont know how) and there will be no temptation.
MinetweakerOk, how do I do that?
I believe the auto spawner takes mob essence to run though. And the way you get that... from a mob grinder around a mob spawner. We also don't use chunk loaders, so they can't just set it up wherever they want to get the essence. They'd have to be around it. We have gregtech installed in an attempt to try and prolong the game and put a little difficulty into it. One thing that can be done with mob spawners... collect a bunch of blaze ones, have your grinders around them, funneling all the blaze rods into furnaces to generate power, which will power the grinders and give you some extra. Free unlimited energy with minimal work. I'm trying to stop stuff like that from happening.
Though it is your server in the end
WE HAVE A WINNER!!!
The simple fact is, it's my server, it's NOT a public server. I pay for it, I admin it, I'm the op. The other two people have even said that they can't be trusted with op powers, because they know that they'd abuse them. What I want to ban, or why I want to ban it... doesn't really matter. The simple question is, HOW to ban stuff. I've gotten a few answers I'll look into. I guess I'm just kinda surprised at this point that there is nothing inherent in the mod packs that let you do it.