This was a trend I had been noticing since before the pandemic; Square had been cutting out bits of content that were thought to have been precedent per the previous two expansions, likely because they had decided such content could've been cut without anyone caring. But it really does make the pack seem barren in retrospect when we consider that we had no side expert dungeons except for the two we got in 5.0, no deep dungeon, no Bozja until over halfway through the pack's life cycle, even the lack of a Tataru outfit at the end of 5.55's story was really disappointing.
I realize the people who care about these bits of content may be considered a minority. I'm sure me wanting more dungeons for expert roulette is a fringe opinion, and that a lot of people didn't notice the absence of a Tataru outfit. But that's what we all thought about crafters and gatherers too, and they introduced a brand new form of endgame content just for them, and it turned out to be a huge success. Likewise, I'm sure there's plenty of deep dungeon enthusiasts out there who were burned by not getting one this pack, and even if they're a small portion of the players, which I'm not a part of personally, it's understandable that they'd be upset. I know they are, because I've seen them voicing this quite often!
I understand that a lot had to get pushed back because of the pandemic, but a lot of this content trimming was planned from the very beginning. Is the solution for square to fire on all cylinders and try to push out every bit of content possible to satisfy every player? I can't say; I don't work in game development so I have no idea how hard that would be on them. But I hope they at least realize that they can't keep cutting content thinking no one will notice. Even if the majority is ambivalent on it, we still notice its absence.