In my campaign, I'm changing halfling traits, but can't come up with anything that isn't covered by some other race.

Here's the requirements: +2 Cha, -2 Str, small sized, +2 climb/jump/swim. The rest is up to whoever can come up with something.

I have one race for every score, meaning that every race except humans and half-elves have a +2/-2, and every score is being covered for each. Elves are Dex, gnomes are int, half elves are socialially skilled. Gnomes are the only other small race. What can I add to halflings to make them viable?