Elliot Taylor and his team at Raison have released a nice WooCommerce plugin called Grow with WooCommerce. The free plugin (available on WordPress.org) allows you to set goals and then offers a month by month summary of how you are doing.
WooCommerce reporting and metrics leave room for improvement, and this is a nice improvement. I think they have a lot of room to continue this trajectory and come up with all sorts of good reports for WooCommerce stores.
