I forget exactly what it does, but doesn't 'Martial Arts(Dex)' do this and more?
<feels uninformed as he doesn't have his books at work>
Yeah, you're right. Martial Arts:
You hand-to-hand fighting talents are black-belt caliber.
Career Level 6+, Weapon proficiency (Unarmed),
at least 1 other Unarmed Combat feat.Benefit:
Your base unarmed attack threat range becomes
19–20 and your unarmed combat damage increases to 1d6.
Further, when you gain this feat, you may choose 1 attribute. If
you choose Strength, your Strength modifier is applied to your
Defense and Initiative bonuses in place of your Dexterity modifier.
If you choose any other attribute, its modifier is applied to your
unarmed attack bonus and unarmed damage rolls in place of the
standard modifier. Finally, you’re always considered to be armed
with a deadly weapon when making Intimidate checks.
from the core rule book