It would be nice to have temporal overall usage reporting available both on-screen and downloadable as a csv in AGO. There doesn't seem to be any way to achieve this other than visit every item individually. There are two very compelling reasons to do this. First is to see total usage and use it as a way to justify cost of ownership. Second is to keep track of which content is trending and which is stagnant or unused. It is kind of amazing that this doesn't exist since item-level usage reporting is pretty robust. You can make a report csv, right now, but its limited. You can't do any of the temporal reporting you can at the item level and there are no charts, graphs or on-screen presentation at all.