I was really expecting to get a better picture of what exactly Shadowbringers was going to be about.
We didn't get even a slight explanation from our mysterious voice as to what was going on and just know that we're needed at the First, which was a given considering what we learned from the recent fanfest. Not so much as a word as to why we need to become the Warrior of Darkness or anything.
I felt like Heavensward got a more satisfying send-off personally, since we were left with a clear goal in mind that we were simply waiting to act on, whereas this time we're just left hanging.