I can sort of understand that, I mean, I might be interested in seeing a decent adaptation of War of the Worlds that actually took place in England in 1898. But when Spielberg/Cruise made their version set in New Jersey in 2005, did you think they were just trying to "cash in on the appreciation of the original work"? I'm guessing that didn't really bother you, so why would Akira deserve a faithful adaptation more than War of the Worlds, one of the most influential sci-fi novels ever published?Because that's the way it was in the original. If you are not going to use the source material why use the name other than to try and cash in on the appreciation of the original work? I loved the original both film and book, and would have loved a faithful adaptation.
Yeah, it'd be cool if every adaptation of an existing movie/book/comic/whatever was completely faithful, but after dozens of "Americanized" remakes of Japanese horror films, and numerous "Americanized" versions of other foreign films (Death at a Funeral, Get Carter, Funny Games, etc.), I don't get why remaking Akira with an American cast is somehow crossing the line.