What would you rank the mobs in terms of strength/difficulty? This would not pertain to the Wither or Enderdragon as I have plans for those, but as I am making an adventure map for kids I would like your opinions on what you would class as perhaps a sub boss (like a blaze on top of an obsidian tower where there is a portal to ender) and what mobs would be stronger in order, thus giving more xp and possibly 'coins' if we do get command blocks.