I couldn't find this in the documentation so correct me if I'm wrong. One aspect that is missing is the ability to obtain a tileset URL from the Mesh Export API directly.
Currently there is a method to get Cesium Sandcastle via itp imodel view cesium-sandcastle --imodel-id 5e19bee0-3aea-4355-a9f0-c6df9989ee7d, but this then requires me to open a URL, look through the Sandcastle code, and copy the URL so I can use it in my app.
It would be much better for automation purposes if there was a way to directly get the URL to the tileset, just as the Mesh Export API returns it.