I have been preparing to make the transition from the Attribute Assistant in ArcMap to Attribute Rules in ArcGIS Pro. This process will take some time to work out the details but the Attribute Rules have much more power and versatility than the Attribute Assistant. Unfortunately, I will not be able to use the power of the Attribute Rules without completely changing our data distribution methodology. This is because you cannot use geodatabase replication with Attribute Rules (https://pro.arcgis.com/en/pro-app/help/data/geodatabases/overview/replication-and-geodatabase-compat...).
For many organizations geodatabase replication is a key part of distributing GIS data. This includes support for legacy software and third party applications (like 911 systems, asset management, etc) . Once Attribute Rules are in place this access is cut off. The excluding of geodatabase replication eliminates a potential solution for continuing to provide access for these non ArcGIS Enterprise applications.
Please consider including support for Geodatabase Replications so more users can consider fully transitioning to ArcGIS Pro.