Frankly, it doesn’t matter because WoW still dominates the genre. I think SL is a perfectly acceptable expansion (as someone who first started playing very deep into 7.3.5 so I really only have BfA as a fully played expac). I swapped to this character around a month ago and I found the catchup to be significantly faster and easier than it was to maintain alts in BfA. I think Castle Nathria is a decently strong raid (I still think BoD is the best one I’ve played through current content). I think the changes to pathfinder and leveling are good, too. There are still QOL stuff they can fix, but imo this is far from a stinker.
And, as I’ve said, even a stinker expac for WoW is leagues higher than pretty much every other MMO.