Modera is level-headed, pragmatical and also a bit quiet. Being introverted is not a sign that you have no personality, btw.
I wish Jaina could have been the one who has done all the things that Khadgar did in WoD and in Legion, or being a partner to Khadgar on the way, which would only have been possible if the story has developed differently. But the way the story has been written, it's better for her to vanish from the spotlight for one or two expansions and to get some rest.
Jaina turning into the female version of the Punisher just feels bad. We already have Rogers for that part.