Ysayle’s death being anticlimactic
You're flying on a dinky ship getting shot at by a giantass cruiser and Ysale comes along with a dragon to buy you enough time to land by sacrificing herself. I wouldn't call it anything but a by-the-books JRPG moment, but it succeeds at that. HW is a by-the-books JRPG which is remarkable given how ARR is a jarring, confusing mess that makes one too many assumptions that the player will have been familiar with the lose canon of the aborted original (and it has shit voice acting).
HW has a bunch of jarring moments. Both primal fights feel thrown in, the introduction of the Warriors of Shadow is weird, the whole of the cloud level feels thematically too light-hearted, so-on. But it also spends its time continuing the story of the first game - here's Raubahn minus an arm, let's rescue him. Here's Yugiri, who's helping us out. Here's Thancred and Y'shtola, and here's a moment about Minfilia being dead as a doorknob. Even the Moogles section, which is horrendously goddamn tedious and boring and genuinely kills the pacing of HW's first third by breaking its spine in half... manages to feel like it 'fits' into the world, because there's diplomacy involving the moogles and a callback to that one random trial you did in the 100-quests. Evil Pope is not a particularly interesting character, but it sticks to HW's modus-operandi: be passable enough.
SB's weakness relative to HW is that Lyse is the most-confusing locus to focus through. The early segment feels like it's trying to give her a character, but she really doesn't... have one? And it feels verymuch like aimlessly wandering around. Doma, by contrast, has clear and obvious goals, clear character moments, and lets our focus be Yugiri and Gosetsu with a comically-campy villain. But when we go back to Ala Mhigo, it still feels like a whole lot of pointless bumbling around and Lyse still fails to have her 'moment' despite the fixation. Ysayle, Estinien, and Alphinaud as HW's core cast aren't terribly complicated characters, and yet it feels like they all get their time to shine somewhere in the mix.