I don't know if I have anything useful to add at this point, but here are my thoughts.

I only played WoW for a short time, so I can't comment on it. I did spend a lot of time with XI, though. We all know that hate management is a team effort, and to that end I think XI did a much better job than XIV of teaching newbies about hate early on. The reliance on parties for general level progression, EXP penalties on death, and a generally slower pace of battle, made each fight a little more important. For a game that relies so heavily on group content in endgame, XIV sure does a poor job of introducing basic party mechanics. The Duty Finder, while a great tool for experienced players, is too impersonal for new players to learn the ropes. Most everybody's first party experience is being thrust into an important story mission with complete strangers. In XI, everybody went to the Dunes around level 13 for their first real EXP party. There they made friends (and connections), and learned what it meant to work as a team. XIV lacks that.