So! I managed to build a Case - The Case of the Fall, where a husband and his butler has murdered his wife and thrown her out a window to make it look like an "accident". You were right to keep things simple - even though all the clues seems TOO obvious to me, for the players it was just hard enough that we could finish in a single sitting. Inspired by the real death of Appia Annia Regilla.
It was hard to drop clues about the identity and backstory of the detective, but I imagine that will be easier on a second playthrough. I'm really eyeing the optional rule to color descriptions based on the current holder of the glass. Also hard to decide when to ask for a roll, and when just to give a Clue directly to the players.
Fun game, all in all! The players we're imagining it like Pixar's Inside Out, which I thought was a great take on it.