I'm a little upset by the whole question, really. It's insulting that the suits think that I, as an American, can only relate to improbably-muscled Viking types. Even more than that, it's sad that the world's wealthiest developer of JRPGs doesn't seem able to think of character designs other than "tough, older, grizzled Western hero" and "svelte, androgynous, teenage Japanese hero".
To put it more generally, I wish developers would stop relying on hackneyed stereotypes (and trying to manipulate them to make the characters appeal to players superficially) and just trust that if they design an interesting/compelling/relatable/etc. character, players will appreciate it.
I hold up Atlus' Persona 3 as a great example from my personal experience; described in bullet points, I'd have expected all of the characters in that game to irritate me, especially the main character. Yet the writers took the time to flesh out and develop their characters, realizing their potential both fully and gradually, and as a result I've never cared more about what happened to a cast of characters in a video game than I did about Persona 3's collection of Japanese high school "stereotypes".
In summary: Concentrate on making good characters, and you won't have to worry about the appeal to individual audiences of the stereotypes they might resemble.