Delete an open file
If you have an open Excel file, it would be nice to send it to the trash while it's open, instead of closing it / finding it on the server / and then deleting it.
Maybe a File / Delete option (under File / Close)
Or, next to "Share", you could have a "Delete" button which sends it to the recycling bin.
Just a thought--you could always recover/restore any file that was accidentally trashed.