I read the "Countdown" prequel comic to "Star Trek" about a week before the film was released. In retrospect, I still think a really neat thing to do -- a nice small wink to the fans of the other Trek series and films -- would have been during Spock Prime's exposition to Younger Kirk, to show Picard, Spock and Geordi on the Jellyfish and later Data and the Enterprise. Something akin to silent, impressionistic flashbacks, perhaps even live action versions of stills from the graphic novel.
I'm not sure about the timing of when the graphic novel was written or illustrated as compared to when the film itself was lensed, and I'm well aware of the Herculean effort it would have required in terms of scheduling, budget and such ... but in a perfect world it would have been a neat thing for die-hard fans to pick up on during the movie.
As for the debate about whether or not the 2009 film is in fact a sequel to "Nemesis" I would have to say YES AND NO.
Yes in the regard that elements from the "prime universe" as established by the preceding five television series and ten feature films are referenced, included, and do in fact play a major role in the progression of the 2009 film's plot. In this respect, the film is a sequel of sorts in my opinion.
That said, the film is also NOT a direct sequel to Nemesis, at least not in the strictest sense. Though I'm not surprised it's a bunch of bickering Star Trek nerds who found a way to niggle away even at this most minute of points, the fact remains that while the 2009 film is most definitely a continuation of the series of films in the franchise, it is by no means a traditional or direct sequel to the events depicted in Nemesis.
So, in conclusion -- make of it what you will. If you want it to be a sequel to Nemesis, it is.
If you don't want it to be a sequel, I have excellent news for you! It isn't!
Sit back and enjoy the picture.