john mcgregor - Currently our Community Map feature has the ability to import KML, GeoJSON files and KML, KMZ, GeoJSON, and ArcGIS URL feeds. Our autogeotagger capability for group content will recognize various Lat/Long formats including, MGRS, States, Countries, Cities and Towns, and relative references. Please refer to our knowledge base for more information:
community.apan.org/.../
Once you geotag group content you can add that content to a map or export the data from the group in KML or GeoJSON formats by adding either a '/kml' or '/geojson' to the end of a group application URL. You can do this to the top URL for a group as well.
Although we do not provide the ability to draw ellipses, as I mentioned to James you can add points, lines and polygons to our mapping feature. We are also looking to pilot ArcGIS Portal Enterprise which will bring various additional capabilities to APAN. As far as your wishlist items (CIP COP and Geonames Database), if you can provide me with more details then maybe there is something that we can do to support your needs. Please feel free to message me directly to discuss further.