My Idea: Unique Skill
How it works: When used 3 bars of ki is taken off, and 3 balls of ki are generated behind of you 2 tiles apart from each other. When the skill is used again (Only if you have half a bar of ki left) you gain 3 bars of ki.
(Optional)Why it's good: I've noted that people run out of ki very easily, and end up having to run away and charge up well with this you can use it before you fight someone to be a sort of reservation for when you get low ki.