Yeah, my only real gripe was that there was still one former detective who didn't have dementia, so even if Hays was in and out of things, they could have done a little more together or separately to piece things together. That said, it was more or less "fine" for me. I think this season's success (and the first) to me came down more to the chemistry between the leads, which was able to sustain the season during slow patches. I don't eve really remember what season 2 was about, but that was the biggest difference to me, not the multiple time period/cold case storytelling.
Considering they went to 75 minutes or whatever in the final episode, I don't know why they couldn't have managed somewhere at some point there or a previous episode to include a few scenes that they cut for time - Hays's wife's death and the situation with him and his daughter.
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