On my recent client visit, I was asked to provide an API for login to RDC programmatically (i.e without using Web interface). This helps the customers to integrate RDC with their internal tools.
Thank you for providing us feedback, it's really appreciated. We are happy to announce that this is something we've been working on for some time.
We are currently running a beta of our new unified platform. You can find more information on our public documentation https://wiki.saucelabs.com/display/DOCS/Automated+Testing+on+Real+Devices
If you have any question, please don't hesitate contacting our support.