I was doing some thinking recently, and while playing Minecraft this came to my attention. I don't find it realistic that pumpkins naturally spawn carved. I think you should use shears on a pumpkin to carve it into the ones that can be used to make Jack 'o Lanterns. Maybe Pumpkins near Witch huts could spawn carved, or pumpkins next to village houses, but other than that I don't think they should spawn carved. (You could only wear them once carved) Just an idea i'd like to see come true in Minecraft 1.11.