I read a comment on the FB "Vera" page which said there is no one who could replace Aiden other than Joe (basically, it was never going to really work moving forward with anyone else) and I heartily agree - when KD made the announcement he was leaving Vera and BB said that they would continue on with the series for another season, my first thought was that the only person who could successfully fill Aiden's shoes (at this point in the series) is the return of Joe. We will be going full circle and I do think that that is the way it should be.
Deedee, still watching "River" and I forgot how good the series is! Great stuff. Feeling different than I did on my second watch - I am realizing that he accepts early on his responsibility for his wrongful judgement. As I had said, I focused more on this the last time I watched - it really bothered me, where I am more forgiving/understanding of his actions this time around. So glad I decided to give it a third go.