A popular branch of Psionics is Kinetics. We have already seen Telekinetics, but there is a lot more to do with energy manipulation: Pyrokinetics, Cyrokinetics, and Electrokinetics being popular options.
The more I've worked on this and talked to various people, the more I feel like three disciplines might better fit what some people want to do with it, but as I am not making more than 3 of them (Fire, Ice, Lightning) theming them will somewhat restrict the type of elemental energy it can wield, and of course, 3 new disciplines is a lot of added document length and complexity, so I wanted to pose the question to you all here.
Let me know what you think!