There was far less content in Heavensward than in Endwalker

[Avatre]

2. The MSQ especially the launch portion of it felt like they were condensing 2 or more full expansion cycles of content into 1 expansion to rush to a story end ASAP.

That describes basically my issue with Stormblood, which a whole slew of people seem to think of as a top rated expansion. Everything felt rushes in there for me.