Their damage was for good reasons reduced on the prophet and the warlock patch.
Reducing their bonus vs large was one of the messures taken and i have the feeling that maybe their accuracy was reduced unintentionally when doing this (At least vs large).
Also, might be wrong, but i think that the higher arc of fire implemented on them on a previous patch, was removed without being said on the patch notes (making them worse when casted from a foot mage or when targeting another foot unit).
Maybe a slight increase on accuracy for these spells is on demand? Thoughts?