sorry just thought about this... it might not be that great of an idea seeing how the griefers will just screw with you by putting their blocks over yours and you won't be able to remove their ****! but being able to lock your blocks would be nice!
 idk i just hate griefers

You know what would be nice if they just made the blocks you lay down lock like they do with signs! You put it down you pick it up! Or be able to lock your own blocks so the admins dont have to be bothered and the griefers can't grief!