Yeah, we'd love to get a Plugin working for C2. We usually try to get the community to develop the plugins so that it stays up to date with community interest and what not. I'm not sure if anyone has any C2 plugin knowledge, but the GJ API is really easy to work with, especially in JS. I got a really small JS file that shows how easy it would be to make web calls to the API at: https://github.com/hworld/gj-html-api
I may start a plugin to get things going, but again, community help would be best!