As it is now possible to time-enable Scene Layers: could you extend the possible data sources for the Time Line widget to also include Scene Layers that were published in a Web Scene. So far it is only possible to add Feature Layers, WebMaps or MapServices.
We would like to visualize construction progress over time. For this, we added a date field and a status to our Scene Layer which we need to visualize in a "simulation" over time.