I have this same issue now in 2017 with Magento 2.
Either residential or commercial delivery, not both.
I am porting into Magento 2 from Virtuemart, and in VM the Fedex shipping extensions (several of them) handle it no problem.
I have spoken to FedEx and they offered to give me the API to develop the extension. I am not an extension developer. Anyone interested ?
I am a bit disappointed with the extensions that I find for Magento 2. There are fewer and they are more expensive than VM. Seeing that the market for Magento is much larger than VM, I don't understand it.
