Well, Con every reset players could claim the towers making it not possible to kill the enderdragon without their claim being undone (Would also effect any future events if you plan on hosting any). Pro, Players would be able to claim in the end, allowing them to farm enderpearls freely without getting killed. Con, Players could claim end spawn, trapping players Which means an end spawn would need built and protected. Other then that im not sure i'll have to log on and take a look