Thanks for getting in touch! We don't have any first class support for deploying using WinRM, and unfortunately we don't have anything currently on our radar for it. I'd suggest adding this idea up on our UserVoice site. This is the main avenue we take when considering new features/enhancements for future releases based on community support. https://octopusdeploy.uservoice.com/
Sorry it's not better news! Don't hesitate to reach out if you have any further questions going forward.