Since we don't have a discussion for it up, I figured I'd make one.
Mostly because being an outsider allows the archer to be polymorphed into an Arrow Demon
. Polymorph grants the character the extraordinary special attacks of the new form, so that particular form gains Close Combat Shot, Oversized Weapons, and Symmetrical Archery on top of the very respectable physical scores.
Bit of a shame it can't Manyshot with both bows, but it's still a great archer form.
The original author made mention of Dragon Mag material. I'd recommend adding the Targetteer fighter variant from Dragon 310 to it as well as the Dead Eye