I don't like "investigation" shows at all - period. When was the last time they screwed up and got the wrong guy? Or, couldn't complete the investigation?
The shows are too formulaic. Unrealistic. I stopped watching them after watching a season or two of "Law and Order" over fifteen years ago.
Since Peterson left, I don’t watch CSI-Las Vegas anymore, and the formula does seem to be getting old. However, I’d have to disagree with you about the series being unimaginative. You’ll have to give me an example of an imaginative show.