Add Inspection as Routing Task Type?

[Christian Carlow]

Does it make sense to add "Inspection" as a Routing Task Type? 
Currently, "Manufacturing", "Assembly", and "Sub-contracting" are the 
three values available which doesn't account for inspection-only tasks.  
The purpose type could just be left blank but I'm not entirely sure of 
the use of the field and if its worth adding the Inspection task.