Running a detective agency requires not only a Transcendent to preside over it but also outstanding business acumen. Charles actually had no one to use for this; he lacked this skill himself and did not have the corresponding talent amongst his subordinates.
Taoles and Dobin were members of the Patrolling Army, not Charles's subordinates. People like Yellow Bear wouldn't end up in a gang if they could work as detectives, and neither The Spotted Deer Gwen nor The Wind Wolf Bankcroft had this kind of talent.
As for Anatasiya and Belisa…
Charles didn't even know if they could do the job.
He chose to trust the old detectives of the Liemar Detective Agency and even deliberately let them pick their detective assistants and trainee detectives to clear out the unstable elements within the agency. Although doing so would make this group of "agency veterans" stick together more closely, there wouldn't be any internal strife within the detective agency in the short term.
