Currently, GET PRIVILEGE provides True/False information about the status of SkypeOut, SkypeIn, and Voicemail. PSTN_BALANCE and PSTN_BALANCE_CURRENCY are properties of the PROFILE object and accessible via GET PROFILE propertyName.

Several feature requests have been filed on Jira, asking more service status information to be made available via the API. I've just merged three such requests into SPA-410 and am awaiting comments and further suggestions from the developer community.

So please get on Jira (if you're not there yet then here is some getting-started information) and start contributing.