Currently, we need to use SetLoadFields to define, if fields will be excluded from a FindSet/Get. This leads to extending necessity the Base App or other base solutions to prevent performance issues.
When creating a TableExt, setting a default value for each field would give us the possibility to still use TableExt, but not compromise existing processes. For my own processes, I will use SetLoadFields. Other processes that don't need my field, will not need to implement SetLoadFields in best case.
DefaultJoinBehaviour = Loaded or Unloaded