More comprehensive mechanism to bookmark documents (shared to the user) as an improvement to pinning.
This applies to all Office products that can open shared files. We need a better way of bookmarking and categorizing a previously opened document to come back later and open again. "Recent", "Pinner" and "Shared With Me" are good starts but not enough. I can imagine an experience similar to browsers' favorites management. Even better if these documents would also be shared with the Edge browser's favorites.