Suggested houserule of Deflect Arrows:
Pre-reqs: Same.
This feat allows you to deflect arrows and eventually snatch them(note that this houserule eliminates the snatch arrows feat).
Once per round you can attempt to deflect a successful ranged attack. To deflect the attack, make a Reflex Save. The DC is 15+the amount the attack beat your AC by. (So let's say Deatheye shoots at Dingbat and rolls a 200 to beat Dingbat's AC of 15. 200-15= 185. Reflex Save= 15+185=200. So Dingbat had better hope he rolls a 20 if he wants to make his DC 200 Reflex Save).
You can also attempt to snatch arrows, if you have at least one free hand. The DC is 20+the amount the attack beat your AC by. If you succeed, you have snatched the arrow. If you have the appropriate weapon in your other hand, and if there is no required reloading actions, you may immediately fire back the projectile as a free action.
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There, now Deflect arrows isn't pointless, but it also doesn't make the skill of the attacker irrelevent.