There was a thread yesterday about how sheriff is boring and too black and white. No need to put any pieces together which is what makes this game fun. I agree 100% sheriff is so boring. Here is my proposal.
Investigation should allow you to pick a target to investigate and pick a night either the current night or a previous night. And then you can see who the target visited on the night you chose. That way you have to put pieces of the puzzle together and you can fact check people’s logs and try to find the person who visited somebody the night they died. It’s very similar to how a sheriff acts IRL. That’d be a much more exciting role to play!