I was working on a set of icons, and realized an area where the interface was getting in my way. I'd like to be able to select a layer in the layer palette, and then show it in the viewport.
So here's the specific use case: you're working on a big field of small icons. click on a layer in the palette for an icon that's currently not visible, and hit a shortcut to move the visible area to it.
If you keep clean layers, you could navigate your document really quickly! no more zooming out, looking around for your icon and then zooming back in.