In case anyone decides to work on that topic: I would really love to see a light version of the Teamspeak widget, that is, without detailed information on clients.
The reason is that I have to deal with a very restrictive rented Teamspeak server where ServerQueries are limited to 10 per 3 seconds (no possibilty to add domains to the whitelist).
Two requests, one for clientlist and one for channellist, would be enough to create a basic viewer layout.
Also, caching the requests so that multiple concurrent page views don't trigger a server flood alert would be great.
I had a look at the widget from @pitaj, but unfortunately my programming skills are rather low.
Any reason the plugin itself doesn't work for you? It does require you to actually click the button to create the post, although I assume it can be automated for Ghost (we just tended to make it a little more generic so it works with WordPress, etc.)