(Copied my post from another thread)
Shadowbringers.
It's the expansion where I feel the focus is entirely on my WoL. I also love stories with despair, gloom, dark and depressing themes. Seeing my character in pain and struggling gave me a lot of satisfaction and immersion. I already love my character but ShB makes me love him EVEN MORE. Additionally, I've always been a huge fan of Emet's Japanese VA so it was a cherry on top!
For Endwalker I would have like it more if not for the pacing issue. I feel like they want to balance out despair and hope in this expansion, which is fine. But how they section them are a little jarring. I'm mostly disappointed the sense of urgency and dread from the Final Days are almost non-existent compared to ShB. I tolerated it though the one that hits the nail for me is the "this is emergency button to teleport everyone back to safety". While I don't expect SE have the courage to off everyone but being told that just completely dismiss the tension I had for the story at that point.
I will say that they have improved / got creative on solo duties (including the stealth and escort tasks). Not everyone a fan but I honestly like roleplay sections a lot! I will give EW a bonus point for this aspect.