If you underpay a foocubus (which includes not having any money in the first place), their chance of getting a headache is increased. This could even be implemented as a sliding scale where they are more likely to get a headache the more you underpay them by.
Even if they have a headache, foocubi should interact with rings of adornment (the typical way; succubi take it and incubi put it on your finger). When they have a headache, they will do this “petulantly”.
Knights who have never consorted with a foocubus have a permanent +1 intrinsic increase damage bonus, which they lose when they do consort with one, with the goal of it being something that is not a huge difference to lose, but does add up over the long run, and which will not stop pacifist knights from using foocubi to achieve the Quest level. This is based on Lancelot and Galahad in Arthurian legend.
Knights get an additional Wisdom-based saving throw against foocubi removing their clothing, flavored as keeping their virtue.
Unicorns are more likely to generate peaceful if you are celibate and have not yet dallied with a foocubus in your game. (Since coaligned unicorns are peaceful anyway, this would affect cross-aligned ones only.)
Foocubi can switch gender either at will or after seducing someone.
A foocubus generated by kicking a sink should have a small chance of wearing an apron (as it is the “dish washer”).
When a foocubus drains an experience level from you, it gains a level. (This doesn’t work the other way around because the hero doesn’t have level-draining powers).
When a foocubus is affected by conflict, it will not attempt to seduce the player, instead just hitting them in melee normally. (The balance ramification of this is that conflict is now able to prevent all seduction.)
Unicorn horns become less effective the more you consort with foocubi, as you are becoming less pure.
Remove the player’s Intelligence as a factor in determining the outcome of a foocubus interaction. Instead, use Intelligence (or possibly Wisdom) rather than Charisma as the determining factor in whether they are able to say no to having a piece of armor removed.
The chance of a foocubus getting a severe headache after an encounter is elevated if you refuse to pay it, underpay it, or have no gold with which to pay it. (Refusing to pay should probably not be random and automatic anymore, it should ask if you want to pay instead.)
Foocubi treat engagement rings the same as they do the ring of adornment; an incubus will put one on you, and a succubus will take one from you.
Add another set of outcomes to interacting with a foocubus: raising your Charisma by one point if a good outcome, or subtracting a few points if a bad outcome.
Add a hard cap on the amount of levels you can gain via foocubus, but count each level gained this way - each ‘educational experience’ - as +1 on your chance of a good outcome of future interactions.
Alignment penalty, or possibly even angering your god, for Monks and Priests for consorting with a foocubus.
Add another negative foocubus result: you get a headache, which gives 10-20 points of HP damage.
Same-sex foocubi will use an amulet of change on themselves as an offensive item.
More randomization or unpredictability in foocubus results so a player can’t be nearly or actually guaranteed of a good result by having a certain amount of Int and Cha.
Unicorns can only be tamed/ridden if you have never consorted with a foocubus.
Foocubi can be pacified or tamed by throwing a ring of adornment at them.
Consorting with foocubi abuses Wisdom.
Arch-foocubi which do the same seduction as regular foocubi, but the random number they choose has a higher average than a foocubus’ 1-35, so the chance of a bad effect is greater and it’s less effective to boost your own stats. Perhaps rnd(35) + 25. They are also more grabby than regular foocubi, and will steal jewelry if you have insufficient gold.
New demon lord who spellcasts, favoring touch of death and summon nasties. However, the only thing it summons and gates in are incubi and succubi.
Foocubi gain a level when you get a negative result from them. This should perhaps be extended to other types of enemies with draining powers.
Randomly generated foocubi may generate with some amount of gold (taken from previous partners).
Exercise or abuse Charisma as a result of consorting with foocubi.
When polyselfed to foocubi of the appropriate gender, #monstering will seduce (i.e. de-robe) @ monsters.
Additional temporary effects accompany drinking a potion of booze. The effects wear off when the confusion does (so if you extend it by, say, drinking a potion of confusion, the effects are prolonged). There is consensus that there should be both positive and negative effects; all of the following have been proposed:
If you consort with a foocubus while Lawful, “You feel unclean.”
On Valentine’s Day, succubi (or any female seducer) steal candy bars you are carrying, and incubi give you candy bars.
Lawful and neutral gods are angered (or do something angry) if you consort with a foocubus on their altars or in their temples.
Foocubi levelport away instead of teleporting on the same level.
