^Right. Ezri's pursuit of the command track was an arc that started at the very beginning of the DS9 post-finale novels, in Avatar
, and continued throughout the series. So to say her appearance as the Aventine
captain in Destiny
is an abrupt change with no prior setup is grossly incorrect. It's the logical culmination of the arc she'd been on in the novels for over seven years (real time) at that point.