I've never actually taken a character out of their starting class (aside from upgrading said class, ie: Thief into Trickster), so I'm used to characters in the same class having very similar stats most of the time. I could get some neat skills from switching it around more, I guess.
Except for non-tome users' Mag and Res stats, which don't like going up.
I wonder why they call them "Dark Fliers" if they can't wield Dark Magic?
Tharja is awesome.