I'm thinking of making an arena on the ground somewhere in the snow biome near spawn. If we really need an island in the sky, tell me.
Also, on the topic of special items, I was wondering if we could change the properties of things. In the Vechs map, Spellbound Caves, the properties of some signs were changed to create Zystonian Battle Signs with an enchanted glow. What if we could change the properties of items and blocks to make it look enchanted, like a building block (wool, for example) or an item that's non-enchantable (extra-painful enchanted snowballs!). Like, a special item could be an enchanted-looking piece of wool that you can place on any block without griefing. I don't know if that's too hard, that can only work in single player, or we would need a plugin, but if we are able to do that, please tell me.