Well the core of the identity of Black Panther is his identity of being African, and in Roots its the core of African American struggles. Honestly you COULD have a white African, as a person of color, I would not have an issue so long as the core of his respecting African/Wakandan history. Though I truly understand the fact that it does not really have merit to have a black man as a Norse god, unless he was the best man for the part. It is an inaccuracy that is glaringly obvious, gods are created by men to resemble man. If you are blonde and blue eyed and so is everyone else around you, so will your gods. If you are tall and brown, so shall your gods be. If you have distinct facial features, long black wavy hair, and specific eye shapes, your gods shall have the same. The actor does not fit in with the world created by both the Thor comics nor the mythology.However,the directors must have felt he was a superb actor for the part. If he did really well in his auditions and stood out he deserves the part, but that goes for any role. Avater The Last Airbender's white washing would have been relatively ok so long as the actors had been good. Acting skill should be the skill by which they are judged first and foremost.
What matters is if the core of a character affected by the change. Is Heimdall completely different from the core of the character? I have not seen the movie thus I cannot answer.
White actors are cast as characters that are minority fairly often, and Pete Ross in Smallville was black without any ill affect. Truly what harm has been done to the integrity of the character? A truly good character should be able to be any ethnicity. Would you really think a poor kid, living with his aunt and uncle, in queens(I believe) would be Anglo Saxon? Without the pictures would you think Spider-man was white? Honestly the preconceived stereotypes of society have an effect, for I find it easy to imagine an Irish kin or a Puerto Rican kid. Daredevil could easily be black
Going onto the whole fan's being upset over the changes....don't go to the movie, that simple. I say this because you have already made up your mind to not like it. You have to separate the movies into a separate universe from the comics. No one wants to cram 20+ years of comics into a movie, and no writer or director wants to just do a rehash of a comic and put it on television. The purpose of producing a movie for the public is not only money but also to put new life into a story and draw in new fans. You cannot expect the film to be a rehashed version of your book. And I know you hate that. You just want to see your book in the talkies, to experience the exact same feeling you get when reading the comics, and to simply observe them in a different way. Well honestly there really is no point in watching a movie if you know the exact events? It loses some of its fun. Also rehashing comics and just throwing the book in the talkies,alienates the public. I know most of you do not care about the general non-comic reading populous, but hear me out. We all know that economic gain is the driver of society, and these movies take ALOT of money to be made. Studios want that money in return, and the only way to do so is to expand your audience. A builder can't sell his product to a fraction of a population and hope to make a mint. The only viable thing to do to draw in others is to make the film more approachable. A major issue in the comic book industry is its lack of approachability. For instance, I love comics, but I find it hard to buy stand alone issues or a continuing arch because if I miss one or two issues I am lost in the mire. Truly, the history of comics is vast and all encompassing. Oblique references to particular issues stuffed into the corners of panels, characters who are mentioned repeatedly but are never seen because they die 7+ years ago in the last cross over event, the sudden dropping of plots and frequent laziness of writers...all of this makes comics seemingly unapproachable. By using film as a medium with the intent of starting from scratch the younger generations of future fans, those who always wanted to read but were intimidated, and those old fans who just got back into reading are (re)introduced to a character in a new and exciting way. They do not have to rehash so many old stories so long as they have the core of the character within the movie.
Sif is Blonde but the actress if brunette. Wheres the uproar over that?