I would like to see API support for creating/modifying answering rules. For example, our company has monthly paid subscribers. We'd like to take that data and build rules on it. We could have our system pull the phone numbers of our active subscribers and push them to the API to setup advanced answering rules based on caller ID. That is, based on caller ID, we would automatically set it up so that paid subscribers could ring our phone while non-recognized callers would get sent to voicemail. Too cumbersome to manually manage this - would need to be an API.