Pagan priest said:
I also find that I disagree with the requirement that you need an open hand to use Deflect Arrow. Wuxia has many examples of martial arts types using various weapons to deflect incoming arrows, often several in very short order... certainly more than one per round! It seems more appropriate to allow a monk to use any weapon useable with flurry of blows to deflect.
quoting myself... how puny:
Houserule alert:
Change the deflect arrows back to DC20 (+x for magic). Add +5 for consecutive attacks (DC 25+x for the second arrow, DC30 for the third). Each deflect attempt wastes an AoO.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.