This is what I decided on.
Halfling Common Traits: Diminshed Statute (Char), Nimble (C-O for Throwing), and Tough (D.T.).
They are basically human and follow the human life paths, most of them are Village Born, but they are not limited to that and can be born into other settings as long as it fits the players concept and everyone else agrees.
I still want to introduce more complexity with this, but that’s just my old “When all else fails, complicate things” instinct kicking in.
By the way, other humans also get common traits in relationship to region and physical natures. Each sub culture /species receive a Character, Die, and a Call On trait to represent their common nature.