REST URL as a data source

I'd love to see both SOAP and REST URL's as datasources. I was hoping it would behave similar to Visual Studio when you add a new “web reference” for a SOAP WSDL. You give it the URL for a SOAP or REST webservice, have it display a list of services/methods at that address. Then select a service to call, and provide a few parameters, so that Power BI can make the call and pull back the data.