Not all interests should have little "give or take" arrows and the default should be N/A. For many interests "give or take" makes no sense. For example: Consensual. You can only give consent and only if both chars give consent it is consensual.
Sex, Bonding, Consensual, Group sex, Romance, Story, Adventure, Casual sex, Drama, Incest, Outercourse, Realism, Survival, Unarmed combat, Unrealistic Melee, World building, Language barrier, Rivalry, should have no arrows, for Ageplay, Breast Enhancement, Rebellion , the meaning is unclear.