I was kind of disappointed with the way they took stamper out. In the original series he became frustrated and felt unappreciated until finally his loyalty broke. Then he got put down when Francis set him up. It was a much more insidious scheme and showed just how brutal Francis Urqhart had become when dealing with his own people.
I think it would have been better if Doug had been sacrificed by Frank because they had had an argument. Have Doug finally snap hard at Frank, Frank gets all quiet, Doug becomes apologetic, Frank tells him some personal and slightly disturbing story about a dog that his father shot when he was a boy because it bit someone. Doug gets the hint and works hard to get back into Frank's good graces. Frank sets Doug up. Something dirty and not in public, like offering that nasty FBI agent who is managing the hacker his dream promotion, provided he makes Doug go away.
I dunno, just something a bit more involved than suddenly getting his skull crushed by his crush.
Overall the plot started to get flimsy by the end of the second season, like the last 5 episodes or so. I think Frank revealed his intentions to too many people and they all sided with him. Namely the secretary of state and the house whip Jackie. If either of them had gone to the president with that information, Frank's "Hail Mary" letter would have failed. Also, the investigation would not have been able to get Xeng to talk, which would not have brought Tusk in, which would have left only loose connections between the president and the controversy.
Jackie showed she was willing to get dirty to get what she wanted, but the secretary of state hadn't really given any foreshadowing that she was willing to jump ship. And Frank's little speech about needing a dance partner seems a bit thin as the sole motivation for her to betray the president. If she was so critical to Frank's plan, you would think he wouldn't have left it quite so much to chance. Finding some sort of leverage to back up his smooth talk would have made more sense.