I should have a version of the PG to test by the end of the weekend. This is a screenshot of the current UI
it's got tools for generating, updating and updating multiple projects and it wraps a command line tool which you can setup (via your shell) as well to handle interacting with projects.
I will post up zips to test for windows / mac (and hopefully linux) in the next day or two, eyeballs and feedback really appreciated (the front end is done in html / css so it's also easy to change).