Oh, one other thought on the sub-races of halflings not having distinct lore. I've always assumed that they took the lead from Tolkien; the sub-races of elves and dwarves have settled and live in different areas with different cultures. The different types of hobbits (and now halflings) all live in the same areas and have the same culture, the sub-races live in blended communities.
So wood elves and high elves are both elves and may both live in the woods, but they are distinct and separate communities with subtle differences.