There are several problems for translating this series into film/television.
1. A lot of the things going on happen inside people's heads. Might be hard to show Kellhus reading the fine details of people's emotions without confusing the audience.
2. Ethnicity. Most of the characters in the books are brown people, and most actors seem to either be white or black.
3. The violence. GoT has thankfully paved the way for hard violence in television, but I still think some of the violence, especially given its sexual nature, in Bakker's books might be over the top for studios.
4. Popularity. I'm not sure how popular ASoIaF was before GoT, but my impression is that Bakker has yet to reach that level.
Still, I really wish it would happen somehow. The magic in this series is described in such a vivid and beautiful way, I think it would be breath-taking on film.
1. Just ape the Sherlock Holmes films interludes for fight scenes and do the same thing for Kellian psycho-analyses maybe?
2. There's shitloads of aspiring actors. Just because it's mostly white or black people doesn't mean there's not a large minority of people that can at least pass for vaguely near-easterners. It can be done.
4. Bakker is definitely not the phenomenon ASOIAF was before it was picked up for a tv series, that's true.