Now that the server has MCMMO installed, I believe it would be fun to have dungeons to raid in.

We could have themed dungeons in either the main survival or resource world. If it was the resource world they could get replaced every time the world was reset with world edit.

The dungeons would be barely lit (or hidden spawners placed), allowing mobs to spawn, and there can be chests hidden around with treasures for players to find. Maybe even a super enchanted-armoured Mob at the end of it to make a form of "boss".

I think it would be a fun idea for players to have on the server - something for them to train themselves for, to either raid in a group or by themselves. It's one of the main things that players do in other MMO games, so why don't we?