I have not read one person post the obvious in regards to limitless bolts, the tactical advantage range has over melee. Melee you need to get up and personal, you will most certainly take damage. Ranged there is little risk... if your smart. So giving ranged unlimited arrows, is just OP, IMO

DRAGON FIRE-AND DOOM Dragons? Splendid things, lad-so long as ye look upon them only in tapestries, or in the masks worn at revels, or from about three realms off...
 Astragarl Hornwood, Mage of Elembar - Year of the Tusk