Custom Mob Spanwer.
If a player gets a mob spawner it binds to him or her. if that player presses E while near or around the spawner a GUI opens. This allows the player to increase the Mobs Damage, Its health, And its block damage ability,Toggle mob following players,Mob Size, mob drops. {I know mob drops sound like a bad idea for this game but these are mob only mob drops unable to be found in the shop. Better red sword with random stats and so on.} If u wanted to keep the sales of these items you could just bind them and make them untradeable like the Transponder. >Down votes away am i right< We could add more such as allow the mob to equip weapons, and so on. The dire mobs are already the strongest with a 2 hit K.O imagine a beefed up boss diregamereviwer. that may or may not be-able to destroy the area around it. DId i mention spawn number from 1-2 and the seconds before second spawn. This would be great for dungeoneers or dungeon masters who want to build epic final bosses. This could also tie into a new quest line where instead of getting the end stone or the gem. U kill the boss and get another completion item of equal value. Like a monsters heart. That can be done over where as the stone can only be done once. The spawner GUI could be for any spawner already in game. Or make a special spawner with another may I add awesome name.