About Asyr. From ze man who made it.

[pazz_dog]

perhaps a maze with loot in it. Turn off the ability to mine, or make it out of bedrock, and put chests with loot in parts of the maze. Probably best to remove block breaking ability in the area so that pistons are still an option in the creation of secret passageways. Anyway, rig it up so it's really dangerous and contains good loot.

So leave a spot for that if you think it's a good idea. otherwise how about a parkour area with tons of skeleton spawners just to screw with people? And there should be a massive obsidian battle ground. Just 'cause.