I love SNW, but the Gorn really bug me. Also, why TF is Nurse Chapel a nurse, and still a nurse when Kirk takes command? She's obviously a better doctor than M'Benga. Also, T'Pring was done wrong; I hate that whole sub-plot. I guess writers just can't resist makig Spock a horndog.
Nurses are different than doctors. You don't really graduate to being a doctor from being a nurse. You go from being a Certified Nursing Assistant, then a Licensed Practicing Nurse, then a Registered Nurse, then a Nurse Practitioner, and finally for the truly crazy there are Doctors of Nursing. This is because doctors and nurses do different things in the medical field.
I also think Chapel is very good at her job, but nurse and doctor are two different career paths. You donβt graduate being a nurse by becoming a doctor.