Space Frame Vertex v0.1

I am always in search of the perfect space frame vertex. Some of the qualities I am after are; ease of use, reduction in amount of plastic, strength, small size, easy of printing, flexibility in construction.

This thing, although not strictly a derivative, meets some of the criteria.

The benefits of this other vertex: http://www.thingiverse.com/thing:9560 is that you can fairly easily construct any vertex to suit any specified criteria. The limitation is that you must create a specific vertex for each situation. So, if you're trying to construct a 2v or 3v geodesic dome, you must create the correct vertex to match that topology, thus increasing your parts count.

This thing uses a flexible joint, like this other thing:
http://www.thingiverse.com/thing:8985

and this original thing:
http://www.thingiverse.com/thing:5126

The difference is that instead of using a ball and socket, it uses a slightly different kind of joint. There are a couple of challenges with the bal