I don't think that the writing of the series as a whole has gone bad, it just seems as if the story has lost focus and direction. My main concerns are the plot holes/fragments and implausibilities. Season one of BSG was important for the franchise and Sci-Fi in general, as it showed viewers that Sci-Fi stories even from the past could be made enticing, relevant and thought provoking with contraversial issues and characters. Now, at the end of season 2, we have......... Adama and Roslyn giggling together in a hallway? A salty, openly vocal Chief Medical Officer who suddenly agrees with the kidnapping of a child and it's subsequent false death? Huh?
Again, I adore the new BSG, I just don't want this ground breaking series to become, well, LOST...