Hi Steve,
We have got an SSL certificate provisioning integration planned. Once we've figured out a sensible flow and implemented the first provider (we're investigating TheSslStore), we'll publish an ssl-certificates package on GitHub to allow collaboration on further SSL vendors such as OpenProvider.
To get an idea of what that will look like, you can see the provisioning packages we've published so far here: https://github.com/upmind-automation
Thanks for posting your suggestion, it helps us a lot in prioritising integrations on our roadmap