I don't think it should be a question whether Doom&Gloom is useless or not....we all should know that it is...UNLESS..your in a 1v1 PvP and your opponent isn't death and your not fighting a storm!
To set doom and gloom while fighting a storm...is asking to die..once they attack you..you need to heal and sacrifice becomes useless -.-
If your in 2v2 or more...you setting doom and gloom is to give away your partner (unless they are death)
KI knows that DnG is a PvP spell, they know how useless it is (unless the conditions are met)...but will they change it?? I don't think so...why? cause that's just how KI is lol