SYSML2_ — Use Cases should have stakeholderParameters

The UML specifies that a use case yields a

"result that is of value for Actors or other stakeholders".

In SysML 2 it now says

"The objective is to yield an observable result that is of value to one or more of the actors".

Stakeholders are no longer allowed. I think this would be necessary.

There are use cases, whose result is not of value for any of the actors. For example a prison cell. The inmate interacts with the cell, observes the result, but is most likely not seeing a value in it. The result is of value for the society, which is not an actor of the prison cell.

I suggest to add stakeholderParameter to the properties of UseCaseDefinition and UseCaseUsage.

Additionally, it should be possible to identify the actors or stakeholders, for whom the result is of value. It is from their view, that the objective is to be described. This information whould guide the documentation of the objective.