Totally agree, I found seasons 1 and 2 slow and patchy but I persevered as I loved most of the actors, and once season 3 started it hit its stride and I binged on the rest. Catherine amazing, but honestly, with the possible exception of Roland Schitt I don't think there is a weak link. The only stretch of the imagination is the relationship between Patrick and David, but I will not comment further for those who haven't watched it yet!