Positives:
Even with all its flaws it was still very fun. The gearing feels great, running group content usually feels great. Leveling feels great.
Negatives:
There are ridiculous mandatory grinds.
Finding a group is annoying af.
Ugly.
No voice acting.
Leveling as anything other than dps is frustrating.
Sometimes it's hard to figure out what to do next.
The community is the worst I have ever seen.
No restrictions on loot so you have to count on the players to not be dicks.
Generally unintuitive in all aspects.
The raid system is bullshit.
All group content has been made irrelevant with the expansion so it's dead content you basically can't play.