One of the major defects of the Nigerian council which necessitated its replacement was that

The Nigerian council had a major defect that led to its replacement, which was that it was unrepresentative. This means that the council did not adequately represent the diverse interests of the Nigerian people. As a result, it failed to address the needs and concerns of all Nigerians, and its decisions and policies did not reflect the views of the majority. This defect undermined the legitimacy of the council and made it ineffective in governing the country. As a consequence, it became necessary to replace the council with a more representative and inclusive system of governance that could better serve the interests of all Nigerians.