A small soup of suggestions:
Lustful Combat:when encountering enemies is have a chance to activate you don't gain resources, but more exp, this can also be activated if you toy enough with the enemy, it makes you avoid a kill, you can get special scenes from enemies.
Companion skills: depending on your nature it could be useful to be accompanied by a character.
Beastie Recruitment: if we interact enough (in a positive way) with some characters they can join us and give us unique abilities while they are in the group.