But she's really good when someone attacks her or when she's supporting someone who's attacked!

So far the only units I've changed are Mozu and Sakura, who I switched to an onmyouji after she made 10 because 1) I thought she would be more magey than that, but I now see that diviners are Hoshidan mages, and 2) of course I wasn't going to leave her as a defenseless rod-user that gets exp only from healing.