Enderman, one of the only two greifers on minecraft. They are annoying and not hard to kill....

When i do Survival Single Player. The enderman tear down my structures and then i am constantly repairing them. Does this not make you angry and want to go on a rage as you try to accomplish great task. Maybe you were sometime in SSP and an enderman steals a rare block of yours or you have barley enough supplies to finish your home on the first day and takes that block and you attack him and you do not get it back.
The main reason I wrote the begining article is to convince you that enderman are annoying and atleast they SOMETIMES place a block down that they took, but sometimes is not good enough,i feel like i am throwing iron in lava when an enderman takes my blocks. I beleive these Improvements should be added to enderman.

• Enderman will drop the block they are holding when killed.
  
• Enderman will throw the block sometimes after picking it up and if the blocks hits the player it will hurt them or if it hits the ground it will stay as in item form.
  
• Enderman will have an inventory and will build hidden bases.
  
• Enderman will rob chest for items/blocks
  
• Enderman will not die in sunlight.
  

I believe these 5 changes will affect the enderman to be more liked of a creature. (Note: I do not know if 2# will work, i am not a modder) Please tell me what you think of these cahnges or if there is another one needed to be listed along with these or if you like the enderman how he is.
Rank up if you like this idea.