What I mean by potential is the strength the ability could become, the techniques you could learn and master along with gaining new abilities derived from this power.
Gravity Manipulation
Everything you can learn by manipulating the relation of body against/with objects and such.
Self-Manipulative Puppetry, the ability can really be op in the hands of someone who is all smart about the human body.
As well as Chakra Point Manipulation not many people pick this power and to be honest I haven't seen much people even recognize this power.
Vibration manipulation
What do you think?