I like the tune - I kept thinking the main refrain would resolve into a larger crescendo, like Answers and Dragonsong both did - and I suspect that is what is upsetting people on Reddit.
Personally, I like it when music keeps me on my toes.
Nothing really to add - I'd spotted most of the treats that have been mentioned, though thanks to Rocl for the Aymeric and Lucia screen shot. First two times, I watched on my phone, and the third on my screen, and I didn't see that at all!

More Alisae is great. She was boss in 3.4, so I'm glad she will be involved. I've also just (in the last week or two) levelled Ninja, so the Oboro tease is nice. Really enjoyed that story.

I do wonder whether we will have a gradual side-lining / writing out of the Scions. Alphinaud has already rung the changes about their jobs at the end of 3.4, and Minfillia is effectively gone. It is nice, though, that it looks like they all have stake in the start of the story and will accompany us through the wall to Rhalgar's Reach.