My opinion is somewhat different from yours yes, The federal character must be abolished, for it has not served any intended purpose or the ordinary Hausa/Fulani person 50 years after is not more enlightened than his counterpart in other parts of the country, and his community has not improved much, or better than the other communities in the south.
That been said, I will not want to cap our presidency to certain category of educated people, that to me will be unconstitutional, what we need is a leader with vision, courage to take the country to another level.
By pegging the presidency to a diploma or whatever level, will amount to robbing some other people chances. The minimum requirement is good as it is, school certificate.
Instead of us talking about the educational criteria of who should be president, we should focus on who has the courage to lead us. Whether a leader is a PHD holder or school cert he will still have advisers and subject matter experts(SME) who will be telling him what to do, and that is how it has been, we should focus our attention on the people our presidency is surrounded with, I believe that is the main problem .