After literally abandoning both Horde and Alliance in the most important battle that Azeroth has faced, in which people from all different backgrounds, even old villains/questionable moral people that are now good have participated, I would be very disappointed if people just leave it be and say "poor Jaina come again". She has shown a total lack of empathy and tremendous egoism. There is no way in which Jaina can be seen as a hero or even good person after Legion. If She's not a villain because some Old Gods/Legion corruption, she's villain on her own.