True, only reason I think barspells could even possibly happen is so far as I know, no mob in the game casts a barspell so no mob would need be changed. Also the spells have no real difference from their AoE counterparts except they are not AoE & AoE do not overwrite(so far as I understand, wouldn't know from experience though) so honestly it doesn't seem like it would be all to hard to do.