I was wondering if you guys are putting detectives in the mod because I think they aren't useful. I may be wrong but they have the same actions as police
Doesn't have to be true. I've completely removed the normal vehicle menu in my LA mod, and exclusively use varied call scripts for vehicles on and off map. One aspect is that most personnel can only call certain vehicles, and only those that already exist on the map. Supervisors, whether it be a Battalion Chief, EMS Captain, Police Detective or Sergeant, or Federal Agent, are the only ones who can call in additional vehicles if needed.
Other than that, many scripts can be worked up in order to give even more unique functions to those type of people and to add more depth to gameplay.