Make it possible to arrange Actors in a hierarchy similar to a class hierarchy in OO programming (not organizational hierarchy - that would have to be a separate feature request.)

Make it possible to find certain classes of Actors without having to explicitly list the subclasses of Actors. E.g. instead of searching for Actors like “Salesperson”, “Sales manager”, “Sales intern” etc. just make them all inherit the Actor “Sales staff member”, which in turn could inherit the Actor “Staff member” or “Employee”.

Make it possible to generalize or specialize an Agent in the Step description by clicking on the Agent in the step description, selecting a super-Actor or sub-Actor from a list (if they are present in the actor hierarchy), and replacing the Actor with the selected one.

Add also the concept of instances of Actors (again, from OO terminology, an instance of a class), so that if a particular process needs to mention a specific instance of an Actor, e.g. a specific named individual, or an Actor that has been assigned a particular process-specific role, make it possible to add such an instance of an Actor instead of cluttering the list of Actors with names of specific individuals or role names that are rarely used.