GeoJSON Features

Based on an initial outline at http://icon.stoa.org/trac/pleiades/wiki/GeoJSON

{ "features": [
    { "id": "alesia",
      "title": "Alesia",
      "classname": "settlement",
      "geometryType": "point",
      "spatialCoordinates": [[47.535, 4.478, 0.0]],
      "srs": "EPSG:4326",
      "center": [47.535, 4.478, 0.0]
    }
  ]
}

Possible Changes

• Should geometryType and spatialCoordinates be rolled together? For example:

{ "features": [
    { "id": "point_example",
      "title": "Point Example",
      "point": [[0.0, 0.0, 0.0]],
      "srs": "EPSG:4326"
    }
    { "id": "linestring_example",
      "title": "LineString Example",
      "linestring": [[0.0, 0.0, 0.0] [1.0, 1.0, 0.0]],
      "srs": "EPSG:4326"
    }
    { "id": "polygon_example",
      "title": "Polygon Example",
      "polygon": [[0.0, 0.0, 0.0] [1.0, 0.0, 0.0] [1.0, 1.0, 0.0] [0.0, 1.0, 0.0] [0.0, 0.0, 0.0]],
      "srs": "EPSG:4326"
    }
  ]
}

• Should the GML (RDF-like) Object-Property model be used instead?
• Should the srs be at the features level, instead of repeated for each feature? This would also force homogeneous srs-s.
• Should heirarchical (non-spatial) properties be allowed, or only flat "shapefile-like" structure?