That level of complexity would be impossible to manage. The disparity between the secularists and subnational sharia populists would make it easier for outsiders to exploit and cause more dysfunction. Less contradiction mitigates the problem-solving process on all levels.
From within it will be easy to manage since there is an constitution that dictates how to share power.
We don’t have to become western to succeed, we can upgrade the xeer laws for the rural communities, shariah for the urban communities and secular in regards to foreign policy etc.