You miss him because you got used to him and people generally don't like change. Dinklage was boring and dry. He was emotionless and the only good line he ever had was: "Don't do that..." Nolan brings emotion and character, making the Ghost the funny, comedic relief. Dinklage brings a serious/ominous tone to the story, while Nolan makes his moments more fun with a lighthearted feel. Does Nolan's voiceover in vanilla content suck? Yes. It is a word for word rendition where he wasn't given a chance to work the material to his manner and style of speaking for the ghost. There is a definite difference between vanilla dialogue and TTK, where the script is not just better, but Nolan was probably given more leniency in the way he delivered the dialogue.