Maybe a transition on Visibility for tiles will allow unpinning them to have a nice animation?

[DrewNaylor]

I should probably use the delete thing, rather than setting Visibility to false. I also need to set the enabled thing for when unpinning a tile as well as the tile edit mode buttons, so they're not interactable with the keyboard (such as Tab) when not in edit mode.

[DrewNaylor]

But also there needs to be the swing-in animation that shows the tiles (and maybe the All Apps list, or maybe that's just when going back or tapping a tile) when the window is shown.