I think the baby should come out the way it is supposed to unless of course it can not. But I do not think the mother should be allowed to request a c-section because she is not a doctor for one and we would not want to endanger her or the baby so leave it to the doctors.
Health decisions, such as elective cesarean section, should always be kept solely between the patient and doctor. There are definite risks to every procedure and it is the job of the doctor to inform the patient of them and what they feel is best, based on their expertise. Everyone should have options and control over their health, especially in sensitive areas, like the birth of a baby. Elective cesarean section should be an option to pregnant women.