A combination of everything you listed. I enjoy the music, story, characters, the FF feel and it is better than anything else out there that I've played. If it had the open world exploration of Elder Scrolls Online and the lateral progression and encounter fluidity of World of WarCraft it would be perfect to me.

I don't log in for hours and hours each day, however, and consume content fairly slowly so I am not as burned out on Heavensward as most other people seem to be.