I don’t think it’s “the worst expansion ever”, that was probably BfA/WoD. But it’s just kinda… meh. The Covenant system just isn’t that fun or interesting and it’s the main feature of the expansion so I’ve already pretty much lost interest.
It seems like expansions like WoD, BfA, and now Shadowlandss, where the devs put all their eggs in one feature’s basket is a big gamble, especially if that feature is a big dud. First it was garrisons, then Azerite armor, now it’s Covenants for me.
Artifact weapons were a hit, along with class halls, so it’s not always a bad gamble. I can only hope that going forward the devs put more time into class-related content because I enjoyed that a lot more.