I thought the storytelling, writing, flow and direction of all the MSQ was top-notch. I noticed pretty early on that there was different music in almost every cutscene from start to finish and it really helped keep things exciting. DT has some absolutely beautiful motifs and arrangements and 7.3 showcased all of it brilliantly.
I liked the change of pace with the start of MSQ by doing the puzzle stuff too, it was something different and it was more than just watching cutscenes and more than just finding that one hidden thing. I guess it gave me personally more purpose as to what my character was doing in-game and allowed me to redeem myself when Alphinaud quizzed me all those years ago.
Dungeon was absolutely spectacular. Music was insane, visuals were aesthetically pleasing, and all the bosses were super fun and the 2nd boss especially was wild. I really enjoyed the trial as well (Will do the EX soon) and especially the cutscenes afterward where the Scions were fighting Necron, very top-notch quality on everything involved with cinematics and cutscenes. I also did the trial in duty support so that was cool to see!
Getting to see Living Memory restored was the total cherry on top, too, and it looks even better than when we first saw it. (Also, most beautiful theme in the game and I'm glad it has so many variations)
Overall, Speen is Queen and I loved the quality of the MSQ and everything that supports it.