It would be great if there would be a list of currently working plugins. Maybe even a list of "must haves" which would be useful to new users. But i guess you are already working on this
To short things up: Poggit is will be a plugin list AND a plugin builder. That means: The developer writes the plugin and posts the code on GitHub. Then Poggit will automatically build (make a .phar file out of) the plugin. And then the developer can click release (I think) to get the plugin released on Poggit