Firstly, this referendum so changes the game throughout the union that it must be put to every voter no matter where they live. It must be a fully national referendum providing a definitive answer to a profound question.
And secondly the question of Devo-max should be put, but not as an alternative - a stepping stone to independence - as Salmond would wish.
The principal question - independence, yes or no - is the important one. But a choice between devo-max or the current level of devolution should be put to those who vote against independence as a secondary question. That way it is not posed as an alternative to independence, but fully recognised as an important choice of degree to those who support the union.