Is support for Geojson planned?
Geojson is a widely spread and supported format
On the clientside there is e.g. leaflet, PolyMaps, etc
and on the serverside PostGis, Geoserver, and so on
I guess GeoJson support is quite low hanging fruit, as the format
is not so different from CZML
Support of this format would give Cesium a good position for the
use cases where values that change over time are not
a must have feature and people just want a beautiful globe.