Good: great acting for all small and big roles, but big roles especially; great take of social issues and the historic gap between values of 2 centuries - probably the only 2 reason why I am watching it; costumes, decoration, operator work, attention to historical details is OK and often fine.
Bad: background street scenery is often sloppy and repetitive; all good female characters look like Polish Jews, slim, with narrow lips and chins, all bad female characters have wide faces, and often are overweight. Last season included other races, but they still looked the same - narrow lips and chins...; stories around great names belong to some comedy show, but not to the show about real person;
the attribution of great scientific talent to a detective is fine, but, please, no human is so talented that he could jump from invention of an idea to making an application-device over night and even over an year without working 24 hours in technical invention workshop all his life, and even so most of talented guys didn't make it. Such a sloppy and simplified take on science makes a point to an audience how uneducated Canadians might be that they think it is so easy to implement the ideas from physics. If the show is a comedy, then it should be advertised like this, but it would lose a credibility about social issues.