I don't know why people think so much about "Meta things" Like Kanna is made to be a well rounded character, good but no awesome in all ways, Like the Robin's Tactician Class so you can made her what you want, you want to make her your mage? Get a good Mage mother to her and go on, Want a One-shot berserker? Get a mother with High Skill and Strenght, Want her a Absurd thank that even the fusion of all final bosses of FE can't do damage on her? Get a very tank mother. But some others characters are like Foleo Syalla will aways be a Magic user Lutz will always be a anti-critical thing Elise will be always Shouting "ONII-CHAN!!!!"