The Yujin reveal is excellent. I also suspected Yujin for a long time. It also adds a nice touch that Susato is a big fangirl of Sholmes and her father is Sholmes's partner.
Case 4 and Case 5 being connected is pretty disappointing, even if I like what I got from Case 4. The double-reveal of Gregson as the victim and Yujin as the partner are really strong and I like the trial segment. DD also has Case 4 and Case 5 connected, but it has the DLC case so it still feels like we got 5 cases. GAA2 is one of the few AA games with only 4 cases.
I can't live forever
With my head and my heart in the clouds