sounds like another amazing HBO production is in the making, both stunning actors

apart from GoT I also watched Deadwood and Chernobyl, and seriously they know how to make TV shows

Pedro Pascal can do no wrong. Great casting for Joel, the man can act.

But race does impact things. The character doesn't look like what he was created to be originally, there could even be cultural differences and whatnot. Also, they'd then have to change the race of that character's relatives as well for it to make sense. Should they then have to switch some black characters to white in order to balance things out? At what point does all this just become too convoluted, when the alternative is simply to just stay faithful to the source material?

By the way, I hope Pedro can pull off a nice Texan accent.

I have no issue whatsoever with fictional characters being portrayed by any ethnicity unless the character is explicitly written as a certain ethnicity and to change that would mean fundamentally altering the story.

I do, however, have a major problem with the casting of an entirely different race when it comes to historical figures, most recently a black actress playing Anne Boleyn. This attempt at altering history and changing the life story of a real person is distressing and likely has been done only to cause friction; I would balk at the idea of a Scottish Genghis Khan or an Arab King Cnut and I really find it in bad taste when things like this are done.

Pedro needs better facial hair

Surely you're not suggesting that an actor should look like a hand drawn cartoon character? Just kidding, but obviously an actor can never match a fictional character face for face, that's not the point or even possible. It's not too much to ask to keep the character's general appearance, race and background intact, though. Stylistic choices are a different matter, there's leeway there because changing a haircut or a look is not nearly the same thing as changing a race. Sometimes what works on the pages of a comic doesn't work in live action, so stylistic tweaks are ok. After all, that character himself would be able to make such changes in his world, should he choose to do so.

I don't think there's a shortage of white actors compared to black actors, so there should be no problems finding a suitable match without changing the basics.

Also, there's just a different vibe to different races, you know? There's no story reason why Marvel's Blade, for example, couldn't be changed to be white, but that would be kind of lame, don't you think? Wouldn't be the same. Or the Bad Boys movies with a couple of white dudes instead of Will Smith and Martin Lawrence? Just not the same, if you know what I mean.