As discussed in Artist Area: Country vs City/Higher Specicifity the area field should almost always be the country and only be more specific if the artist ‘represents’ a small part. E.g. rappers often scream out the name of their ‘hood’ in every other song, going so far as that 100+ artists are set to the housing project Queensbridge (appr. 6,907 inhabitants) because they represent it (“QB”, “Da Bridge”, “41st side”, “40th side”, “Vernon to 12th”, …) vigorously.
As I also mentioned in that topic I agree that we should have more area fields for artists.
Many artists are closely associated with many areas and should be in the list of all artists of that area.