Ability to make API requests on the local network
Lambda function would ask echo to query the local network and echo would send the response to lambda function (like it does with the function to speak/listen).
This would allow API requests on devices which are not open on the public network. Like a TV box, to use its tv remote control's API. Or a home automation box ... etc
I live in France and my network provider (Free Telecom) provide a tv remote control's API for box TV. But it's working only on my local network. For my usage i could use a proxy on a Raspberry PI but if i want develop skill for all Alexa's users. I can't ask them to use proxy.