Button fill and shadow improvements

When rounded corners are turned on at 10 px default and the Shadow is turned on for a button, the Fill only extends to the Outline (and not the Border). This creates transparency between the Fill area and the Border. Which would be fine to use either the Outline or the Border for the shadow effect, but then the Shadow does not follow the radius of the outline and is simply becomes a rectangular shadow, regardless whether the radius is applied to the outline or not.
Proposed solution: can we please have the Fill extend to the Border (if the Outline is turned off)? Can we also have the Shadow follow the radius of Outline (if Border is turned off)?