It does but let’s be honest Priest has too many points to use specially if you go Chaplain, not to say that Heal isn’t an option as offensive skill for some builds… (also those skills won’t prevent you from AA while they’re dealing damage). Even tho Corsair will be the one getting the short stick since it doubles the lines (6~8 -> 3~4) as if it wasn’t hard enough to keep up the attack rythm…
The main issue with Sacrament and Last Rites is that both give Elemental Property Attack (which is a really odd stat) and with the change it will be just a different type of blessing, it was useful for AA and multihit skills but now it will only serve the second one.
Some AA Math
Current AA for Chaplain with 4 lines - AA, Sacrament, Last Rites and AspergilliumBlessing = 1941 * 4 = 7.764
Sacrament (lvl 1) + Last Rites = 570 * 8 = 4.560
Total Bonus Damage = 12.324
New AA - AA and Aspergillium (new sacrament formula)
Blessing = 1941 * 2 = 3.882
Sacrament (lvl 10) + Last Rites = 1.707 * 2 = 3.414
Total Bonus Damage = 7.296 (40% less)
Note: I ignored all Elemental Property Attack provided by equipment such as Lionhead Dagger that gets halved due the line removal. Also it’s very likely that Enchant Fire will get the same treatment as these skills removing the additional attack line.
It would be way more interesting and useful to take EPA as a two front stat instead, if your skill doesn’t match the stat it just add it as it currently is, however if your EPA is the same as your skill it turns into extra Atk/MAtk and multiplies the skill factor. This is an interesting tradeoff even if the they have to tune down the numbers.

