Now, now, I pray you do not form opinions in your head before you read this article. The title and teaser may come off as a bit aggressive, but let's just relax and read this whole thing through. I can only hope you do so with an open mind, and an open heart. Now to the nitty gritty.
Many members of this site grew up reading comic books of many a different color. The stories, characters, and magic is something you hold near and dear to your heart. I am sure you are aware of this, but I must point it out anyway; the comic book era is fast coming to an end. Many might argue it has been doing so since the end of the Silver Age in the 70s and 80s. Or are we still in the Silver Age? Or...I don't know. Whatever. My point is, comic books are not nearly as popular as they once were, and you are the dedicated fans that have stuck with them through thick and thin.
Alas, do not give up hope yet! The saving grace of the comic book industry comes in the form of high-budget blockbusters like The Dark Knight and Ironman! Do not fret, these massively popular films have managed to hold off the death of the industry for some time, and, if everything goes according to plan, they are just getting started.
The majority of these movies end up with mixed reviews within the community. One of the biggest complaints tend to be (keep in mind, I am forced to paraphrase) "no respect for the source material". People don't seem to like when certain liberties are taken, such as the first class in X-men: First Class not being the same first class in the comics. Another example, this time for a character, Hal Jordan's role in Green Lantern being too comedic (perhaps because of the actor playing him, perhaps not).
Don't complain. Please, please, calm the nerd rage. I understand you hold a certain reverence for these comics, and I also understand why things like this would make you upset. However, I am sorry to inform you that comic book movies ARE NOT comic books. Nor should they be forced to take ANY cues at all from the comics.
I suppose the argument you are forming in your head may be something like "ooo, but if the film isn't based on the comic, don't name it after the comic". I may be wrong, but this is what I have an argument against, so I am pretending this is what you are thinking. Really, as long as they have the rights, they can use that title any which way they want. They don't have to worry about what anybody but their superiors thinks. In fact, you are lucky that they like to use the images of popular characters to help draw in an audience. The modern superhero movie is not a tribute to the character, but a potential multi-billion dollar franchise that they can cash in on.
Of course, there are exceptions to that rule (see: Marvel Studios), but by and large, if you want a direct interpretation of the characters, of the stories, and/or of the comics....read the comics! When a studio makes a movie, they are making a MOVIE that is BASED OFF of a comic book. I understand it would have been a nice tribute to the X-men comics to have the original first class in First Class. However, I also think it would have been a nice tribute for the Star Wars prequel trilogy to NOT SUCK. I wrote this whole article just for that line. I keed, I keed. But seriously.