Multi-leaders are a core AutoCAD annotation object. FME can explodes MLeaders and cannot write the Mleader back to DWG. This blocks end-to-end DWG automation workflows that modify and write back DWG files.
Adding MLeader write support would allow users to recreate and update leader geometry, text content, and annotations programmatically.
Another object key object which needs writing support is the AcDbTable or AutoCAD Table.
Supporting these two key objects would significantly improve holistic DWG editing and automation capabilities in FME.

