Fallen angels aren't planned? Aren't they the only way to get demon essence ATM (for the witch hut quests)? I have found no other enemy in the game that drops it. There some black cloaked demon in the forest sometimes, but I can't fight those
And to add to suggestions;
new skills: booty call (targets self, makes user more likely to be attacked by sex attacks)
tease (targets enemy, puts in horny state for X turns)
taunt (targets enemy, enemy will target user for X turns)