Ok here is one that might be a LITTLE overpowered... but I'll try.
-Mugger (Req: Pickpocket of 3 likely): When speaking to someone you get the option to steal from them in a conversation without anyone seeing. It is less efficient but is a safer way to steal key items. -Speed Drinker: Unlocks an ability that gives you a free action to quaff a potion (Whether it be healing or resistance). --Alternatively this could not work with healing potions -Bottletoss (Scoundrel): Allows you to throw potions in battle as if they were grenades. --Alternatively this could work only with negative potions and poisons. -Social Grace (Persuasion): Once per conversation you can recover from a failed persuasion roll, allowing you to try again. --Alternatively: Failed persuasion gives a grace period to escape before combat occurs, allowing one to escape.