Main request:
ArcPRO desktop provides option to save a layer symbology to a SD (service definition) file to disk.
Can Safe add support > allowing the user to browse to .sd files when they update or publish as a feature service (hosted), FME will use the ArcGIS for Python API to overwrite the symbology style
This may also be an option to include in the Arcgis online connector transformer, when the use select publish.
Secondary requests:
- LYRX files in ArcPRO as coded in JSON. Perhaps ESRI and Safe can work together to support updating arcgis online styles, where the user can browse to a desktop LYRX file they saved out
- in QGIS and OGC they have an option to save SLD (styled layer descriptor) files. As a stretch goal, allowing Arcgis to use these for style definition would also assist in data migration projects
