Humanitarian and compassionate consideration is crucial in any immigration system, because one can never foresee the impact of the law in all circumstances and on all people.
In this case, H and C consideration with respect to citizenship revocation should be located with the immigration appeal division or with whatever tribunal, if there is to be one, that will consider an appeal. The factors to be considered for H and C should be specified, or could be specified in relation to that particular task with respect to citizenship.