I propose that for Nigeria to be truly one different from what our founding fathers envision ( because they were ethnic champions clamouring for ethnic superiority in the enclave called Nigeria and who to rule, who to have the highest share of Nigeria, who are to be designated the superior and who to be designated the inferior.
If you want to know check the true history of Nigeria founding political leaders in a saperate perspective what is normally feed to us.)
The superior law of the land that must be above any religious, ethnic, sect, cult or personal laws, insomuch that the same punishment matted out to a Christian/muslim for killing a muslim/christian or any person living in Nigerian, the same law protecting a muslim in the south is the same law protecting a muslim in the north, a law guaranteeing the freedom of a small Christian businessman at Zamfara state should be the same law protecting the another small muslim businessman at imo state.
That same law that gives me the right to apply for any Nigerian job as long as i have the qualification without recourse to my ethnicity or religion, that same law thay makes me a Nigerian first before any other thing, that same law that will give a due and appropriate punishment to both the high and low equally without recourse to his riches, the same law that can defend a poor muslim/christian against a rich christian/muslim and that same law that will guarantee the operation of any worship house anywhere in Nigeria all in full practicality. A law that guarantee that nobody, religion, sect or cult is above the law's punishment.
A law that treats law abiding foreigner the same as good citizen, a law so equal it doesn't need ages for interpretation, a very Nigerian law so Nigerian that the populace know knows it by heart, the law that works, a law that guarantee that all Nigerian are treated as Nigerian anywhere in Nigeria and anybody that goes against it is punish accordingly and promptly.

A law that will make ordinary Nigerian proud of his country, a law not just for hearsay but a law that works for all, a law that works both in the interior villages and in the big cities, a law that forces the Government and iys officials to be totally responsible and accountable to all Nigeria no matter his/her political status. A law that will make me a citizen of Nigeria no matter where i go in Nigeria.
A law that punishes a muslim for a crime against a christian in a muslim dominated area and also punishes a christian for a crime against a muslim in a christian dominated area.
A law that will make God proud of us

Nice approach