Extend the stat effects of BE I, of course, and grant a new stance, Suppression Fire or something, that granted ranged attacks the ability to cause glancing blows to targets within a small (same as aoe burst affixes on weapons) circular AOE of your target, with a chance for weapon effects equal to your Arti level plus INT mod * 10, and exclusive of PS and IPS stances. Sort of a ranged answer to THF.
Maybe recharge EF at 1 per 2 min too like Cleric turns :)

