(sort of a review, but I don't know how to post in the Review thread)
As I'm going through a full-lewd playthrough after completing a Crisis virgin run, I'm seeing something that bothered me in Ambrosia as well - the various sexual attacks on the heroine are fun, but after a bit they are completely ignorable, irrelevent (or worse).
At first, before one has high shame resistance, clothing damage has the consequence of sometimes preventing Celesphonia from fighting as she covers up for a round. But later, shame resistance gets high enough that this problem goes away, and there's no point to the enemy's clothing-breaking attacks.
Meanwhile, their arousing and pleasure-inducing attacks are entertaining, and can gain some fun new titles, but there is no downside to Celesphonia suddenly having multiple orgasms in the middle of battle. She doesn't lose a round of attacks, doesn't suffer any particular debuffs (some attacks cause debuffs, but not her pleasure or orgasms). Even worse, the grappling attacks are actually beneficial to the heroine, as they let her (slowly, or rapidly depending on her engrams) rebuild HP and MP while the enemies are wasting their time slobbering on her.
I suppose that could be someone's ideal game style, but for me, there should be a point to the enemy's actions - they should actually help the enemy win. But they do nothing whatsoever, which really makes it hard to keep in the "RP" mindset of a reluctantly-used heroine.
Compare this to Apostle Angel Liebe, for instance, a far simpler & shorter game, but there the erotic traps and attacks can actually wear the heroines down, in addition to boosting their sensitivity and so making them more vulnerable to further such attacks. Energy is depleted by orgasms, and so attacks targeting the heroine sexually can force a retreat or actually, directly, lead to a defeat.
Celesphonia is still fun, with its great variety of scenarios to unlock, but I think it'd have much more impact if some of those erotic attacks actually made the player think "Oh no, that attack boosted arousal by 20%! I'm in trouble!" rather than "Oh good, they used their molesting tentacle instead of the stabby one".
Umm. So. Just in case someone's planning on making another H game. ;>