I’ve started a trello board to track this effort. We plan to remove these from foreman core in release 2.2. If you will want to use this funcionality from that point on, you will need to install plugin foreman_statistics.
If you wish to follow or even help this effort, use the board as reference, I’ll keep it up to date. If you have any suggestions or concerns please share them here as soon as possible. Once the repository for the plugin is created, I’ll update this thread.