I would like to see some type of indicator on the Timeline view (or even Storyboard view) that shows whether animation is being applied to that slide or not. It could be something small that appears on the small layer image itself (which is preferable since that would show which layer is being animated), or maybe on the top where the slide number appears (if there’s room). Just something somewhere.
I’m not a person who uses the Ken Burns’ effect, which to me is rather boring. Zoom in, zoom out, zoom in, zoom out, pan a little left, pan a little right, repeat, slide after slide after slide. I’m rather judicious with my presentations and let the images speak for themselves. But when some time of panning or zooming in is called for, then I’ll add some animation. But I can’t tell just by looking at the Timeline WHICH slides or layers are being animated without scrubbing through the presentation.