QuackVader
I hope you are aware of the construction of Itachi's power level. Long ago it was said that he had the level of the lieutenants and that he could even defeat most of them, now that his power has increased so much it would be very foolish to continue saying that he only has the level of a lieutenant...
I think the ideal wife or lover would be Captain Unohana, they both sacrificed themselves for what they believed was right. And I feel like their personalities match and Captain Unohana no longer likes violence like I think Itachi doesn't like it either, but it is a cruel world so they are obliged to exercise it. My curiosity is if both could have a son or daughter since it will be many years before Ichigo appears and if their son could inherit part of his parents' powers. That is, his eyes inherit the Bankai: Minazuki, from his mother.