Why is this discussion taking place on the tech list istead of the appropriate commons project page which I posted a few days ago?! The issues have been discussed by the people who are involved in the project. This seems to be a typical color of the bikeshed discussion...
Again, if you'd like to contribute pease do so at http://commons.wikimedia.org/wiki/Commons:Geocoding not every one involved at the Geocoding project is reading this list!