The Ender Arena

Have you ever wondered what the Endermen do with the blocks they steal .  Well I have a solution. The Endermen take the blocks they steal from the over world to the end where they build an arena where there are new mobs  that you have to fight to get loot. To get to the ender arena you need to kill endermen that you see with a block in its hand. The Endermen will drop the block. The. Build a five by five square with the blocks then a diamond block in the middle in the end after you have killed the ender dragon. Then jump in to get to the ender arena.   

Or the minecraft designers  can pick what the endermen do with their stolen blocks.