Well, hmm. As someone pumped to play FFXV and as a long time FF fan I felt duty bound to watch it. I'm not sorry that I did, but I didn't find it very enjoyable. You really can't knock the animation or voicework, was pretty happy there.
A lot of the dialog (especially the quips and retorts) were pretty cringeworthy to me, a more talented hand was really needed there. I found the story difficult to feel invested in. They make a point to stress all the immigration stuff and it goes nowhere really, you don't feel like there is much of a payoff, just some good (sort of) battles -- that honestly went on for a bit too long.
I wish I could have felt something for Lunafreya, maybe if they had established her better as a character. I would have liked to see more of her with young Noctis perhaps.
Weird editing choices too.
I love final fantasy games for their gameplay. Occasionally the stories are good. But they sure are good at feeling bogged down to the point where they either start dragging or don't make a lot of sense or emotional impact. FF8, FF13 and to a lesser extent FF10 all had these problems for me. I'm worried it's going to be the same story for FFXV... but damned if I won't enjoy playing it either way.
In the end, glad I watched it for the backstory. I did enjoy some aspects. Liked Regis Lucis, the art design and all the great detail of the city, the music, animation...