Dragonhelm
Knight of Solamnia
Screw subrace bloat. Pathfinder's optional alternative racial traits are a lot better than a full statting of 52 different elves.
Subraces do not necessarily equate to having different stats for each variation.
For example, 4e gave us two distinct subraces for base elf - the eladrin and the elf. After Essentials, it became pretty obvious that the new elf stats could be used to represent a woodsy elf or an arcane elf.
I think you could just have one set of stats for halflings, then say that the lightfoot halflings look and act one way, and the hairfoot halflings look and act another way. Make it a cultural thing, not a mechanical.