Names are names. They are what they are, not for changing purposes. Unless its a different alphabet and therefore unppronouncable it shouldn`t be changed.
And what are you talking about by saying “names are names”? Readers quickly discern similar but different spellings seen frequently, but listeners will not quickly distinguish words that sound very close when spoken (and heard comparatively seldom!) on the screen without any lexical clues.
This has nothing to do with spellings, but only with pronunciations, which always follow the speaker’s accent. Sounds matter, not letters. It’s having the same sounds that makes them nearly indistinguishable quasi-homophones. They cannot use the American pronunciations, because those would make no sense in a show whose native speakers all have British pronunciations.
Notice how Viserys pronounced “dynasty” as U.K. /ˈdɪnəstɪ/ in the show rather than as U.S. /ˈdaɪnəstɪ/. They had to use the British pronunciation there. It would have been inauthentic to use twangy American pronunciations, which means they would have been stuck with the near-homophones /ˈɑːʃə/ and /ˈɒːʃə/ . No one would have heard the difference, because the rounding of the open back rounded vowel /ɒ/ is the only think that distinguishes it from from the open back unrounded vowel /ɑ/. Roundedness is a trait that varies between speakers, and it simply would not have come across as sufficiently distinctive.
Edited by CrypticWeirwood, 10 April 2012 - 12:59 PM.