Hmm, not sure about multiclass wonders but they do seem gimped again.
+ 2 con, +2 cha (ok, same as others)
+2 dip, +2 insight (same as other races)
at will as an encounter (decent)
group diplomacy (weak)
can take feats of either human, elf, half-elf (this one could be ok, but maybe should give...