Stormonu
NeoGrognard
The designers would have to beware with regard to any racial benefits that favor certain classes over others.
Actually, I'm all for designing racial abilities that favor certain classes or professions over others. There will still be people who wish to play against type and will do so even if an option is unsupported. Likewise, I don't feel designers should be constrained to make every concept viable; they need only worry about the common and popular choices; individual groups can make their own stuff up for the sidelined choices.
Overall, I don't want to see racial levels or paragon classes to cover advances in race or culture. I'd rather see them somewhat like the background abilities of 4E - something that you just get at 1st, 3rd, 5th, 7th, 10th, 12th and say 15th level. Small bumps that augment your character according to concept.
And I don't think it should be restricted to just race. I'd also like to see culture lumped into this. Being from a city, the woods, a citizen of Corymr, having grown up an orphan or even once being a member of the town guard could all provide small story-based bonuses to help build your character.
The trick would be to keep these from being purely mechanical bumps or bonuses. I wouldn't want to give someone whose city-born just a +1 bonus to Streetwise, for example. I'd want to instead look for a special use of Streetwise instead. Perhaps an ability "Face in the Crowd" would let the character use Streetwise instead of disguise when in a large group.