Randall,
If your drawing contains an AutoCAD block definition that is named the same as the feature service name it will draw feature coming from servers using that block instead of the default point entity. It would be the same syntax as the AutoCAD Layer name that the feature service is drawn upon. “ESRI_”
My set of bonus AutoLISP routines for ArcGIS for AutoCAD also have a set of tools for working with blocks and POINT feature classes.
YouTube Demo of bonus tools
https://www.youtube.com/watch?v=N78JvafA2-Q&list=PLHTg8zWG0OunfoXfgWWSTvU0UTCFs6ebl&index=3
Free Bonus Tools on ArcGIS Online
http://www.arcgis.com/home/item.html?id=103f4d42de804f4ab42ff498026d9ddc
-Don