Agree with many of the points you make, not all, but many, especially the interactive maps.
CoD4 is considered the best because it was something none of us had ever seen before. It was an amazing gameplay experience, simple yet endlessly entertaining.It gave us choices, made us decide between perks, and it came out before the community turned into what it has become today. People started it by playing for fun, it wasn't about MLG or stats or YouTube fame, all of which came later, primarily as a result of the popularity of this game. It was fun and simple and for a while you didn't have issues with campers or hackers. Its sad what its become now, going back.