New feature in slideshow assistent to combine zomming and animation

As zooming and animation often depend on each other it would be good to have some new options in the slideshow assistant to save time creating slideshows. Right now the slideshow assistant always messes up slideshows containing different picture formats and with my proposal this would be solved.

I imagine the following options:

Zoom / Animation

Zoom in from “Show whole pic” to adjustable percent
Zoom in from “Fill stage completely” to adjustable percent
Zoom out from “Show whole pic” to adjustable percent
Zoom out from “Fill stage completely” to adjustable percent

And it should be possible to alternate between zooming in and out automatically.

With this options all problems with different picture formats are solved once and forever.

Well responsiveness is definately not your strength.

However I´m convinced my propoasal would make a lot of customers happy. I attach a picture to explain it more detailled:

GUI proposal