Use cases: OSM buildings
The Cesium OSM NYC demo uses Batched 3D Model tiles. It could be a net win to use a more concise tile representation based on OSM constructs (for example, their roofs) and then quickly generate batched geometry at runtime, in a web worker if needed. The OSM constructs may not map well - or efficiently - to Cesium geometries, in which case, we could convert them to something Cesium-friendly and use that as the tile format. This may be the Vector Data format, but we want to avoid creating a Kitchen sink.