That is no small feat of coding and integration to save slackers some time and hassle.
I am far from a programmer, but I would imagine such a change would take a considerable amount of time an energy to implement and would also require considerable integration efforts to ensure existing maps aren't altered or made unplayable.
Quite simply, there are many more pressing issues facing the game and requiring Fizzer's attention than this fix. Of course, I am only one voice... if you truly think it's worth his attention, put it up on User Voice.
However, note that two such proposals have already been declined due to lacking clear definition so make sure you explain your desire clearly.