Installing Add-Ons TTW

While building this site I was reminded of one of the areas where Plone has fallen behind some of the competition: installing add-ons.  With buildout, eggs, entry_points, easy_install, and PyPI it seems like providing a TTW, one-step, point-and-click add-on install story is just a matter of stitching together the pieces.  It's a project that I would love to work on if I ever have any free time or if anyone wants to sponsor it.

Is there any work out there on this already?