Another possibility could be related to skimpiness of armour. Equiping armour which reveals more than a certain proportion of skin results in the debuff “Embarassment”, which has the visual sign of the player blushing (the brightness of the blush would be related to proportion of skin revealed). At higher levels of “Embarassment” the player would also run away from other players and hide.
To counter this, there would be the infusion “Self-confidence”, so that the higher the level of “Self-confidence” the skimpier the armour that could be worn without ill effect.
This could also mean that Anet could introduce ascended gear so skimpy that it would make TERA gear look staid and conservative by comparison. In order to be able to equip this armour at all, the player would neeed the highest level of infusion: “Total self-confidence”.