As a Sana customer I would love to see an integration with the third part application Freightview, https://www.freightview.com/
They allow you to connect your preferred freight providers and add a markup based on users. It's a pretty straight forward API that I assume would work similarly to the fed ex integration you already have. This would have multiple benefits like allowing Sana to integrate with all the freight providers Freightview supports and for us on the customer side to decide our own providers. just put in your api key and away you go.