1. When uploading a custom device model, the uploader would not allow my behavior script to be named anything except "drone-state.js" which is the file name from the tutorial (https://docs.microsoft.com/en-us/azure/iot-accelerators/iot-accelerators-device-simulation-advanced-device#behavior-script-files).
2. If the IoTHub connection string doesn't work when creating a simulation, there's no way forward except canceling and starting over.
3. The inputs relating to messages per second really need to be labeled.