Swamp Skeleton Head. Its mechanics.

I know that update 1.21 hasn't been released yet, however, there's already an idea (in case the developers don't implement it). I believe that the swamp skeleton should have a mob head added to it, which can be obtained just like other mob heads in the game. Its mechanic would be that the head can be used as a block for growing mushrooms. More specifically, if you place the head of a swamp skeleton, over time, either a fly agaric or a brown mushroom will start growing on it (randomly), and these mushrooms can be harvested with shears. The head can be used for a simplified mushroom farm.