personally i find silverflame faith a little bit of.. useless.. i mean why on earth would any divine caster use long bow? without good dex(or zen archery) and bow strength it doesn't seem very doable.... and splashing seem more lose then gain, splashing means losing capstone, inferior casting ability and lesser spell per day/known..
my idea:
apply the to hit bonus and damage bonus(fvs) to all range weapon, not just long bow. so it could apply to xbow and throwing waepon..
or
grant bow strength for free or at the cost of several enhancement point..