Well, as I say, I think the reason for resignation is the inability to continue to discharge the role of Attorney General specifically.
Again, to reiterate, this is not something that should happen easily but needs to probably occur if there is some significant series of events that occur that make it difficult for the Attorney General to continue to discharge the role.
As to the question of the appropriate characteristics and qualities that are needed to fulfill the role, presumably there are opportunities for cabinet to determine that, in specific factual circumstances, it may be preferable for someone else to fulfill the role. But, again, the risk is, for a group of cabinet ministers as a whole, that they are also subject to public and political accountability for those kinds of determinations.