Category quantity numbers

Morning Fellas,

regarding the category list with quantity number , see:

and scroll down to Ruby (2)

as you can see it's showing two items in that category, one of those two is out of stock and I have trashed it too, so my question is:

When an item goes out of stock is there a way to "unpublish" so that it goes into draft and does not show in the quantity next to the category - not could this be added to the wish list please.

This is especially useful if you are selling unique products that can't be restocked because as it is right now it would show "out of stock" and lead vistors to think it would be replenished at some time in the future.