Text Object Effects - Transition - Fade

The present options (MS6) for the "Fade" transition are; Fade through black and Fade through white. PowerPoint has always had a "Smoothly" which simply moves from one page/slide to the next without going through either black or white. It results in a very professional look and is especially useful for songs where you need something quick and subtle between pages. We dare not use any other transition and avoid anything startling. The addition of a "Smooth Fade" would be very helpful.