I agree with most of your point, but personally I felt quite the opposite about the cases. Case 1 did feel like a tutorial, and had some questionable FTUE design, but I didn't feel like I was trying to get the game to say what I already figured out. Case 2, however, I knew exactly who was the culprit after watching the second witness testimony. I had a hard time trying to get the game cooperating with me to get the culprit out. Case 3 was perfect in my mind. Wasn't too long, and neither was it too short, and I figured out the fact as they were revealed.