A Season 4 I'd like to see
I think it would be interesting to try a European version of this show. I'd like to see James McAvoy and David Tennant as the cops doing an investigation in Scotland.
I think they've got the ability to portray some pretty tortured personalities and I think Scotland provides a setting for very True Detective themes -- the poverty of Glasgow, the rural areas, and the potential for weird, pagan traditions existing in those rural areas.