I would suspect that the dialect such hillfolk use would be quite different from the Southern drawl we are all familiar with and might not make a bad dialect for a fantasy game. Just like some folk/bluegrass music I have heard might make for a good soundtrack in a fantasy game setting, while Nashville country music would not.
Well, I agree. I am not advocating for a historically accurate medieval accent. I am advocating against any type of accent that is recognizable as coming from a particular region of a country that can only trace its history back 200 years (okay, 400 years if you take it back to Jamestown). The hillfolk accent you are suggesting is not something that is going to be recognized by a majority of viewers as belonging to the Southern US, so that sounds fine to me.
Ideally, we would have unique and interesting accents for these types of games/films that would not necessarily be based on any particular country/region. I remember the original Highlander movie featured a main character who had an accent that was not instantly recognizable because the character was 400 years old and had lived in many places before settling in New York City.
EDIT: Here is a link to a video with "mountain talk" of Appalacian America. This would not be a bad accent for a fantasy setting but it sounds nothing like a stereotypical Southern drawl. http://www.youtube.com/watch?v=03iwAY4KlIU




