With creating featureclasses from scratch in ArcGIS Pro, there is for file geodatabases the option to import fields from another already existing featureclass or table. However, this functionality does not work with mobile geodatabases. If I open the mobile geodatabase from the import dialoge, I see "empty container" although there are featureclasses and tables if I open the same mobile geodatabase normally. Not to use a gdb as a workaroud would be a great benefit.