Morkus from Orkus
You might want to research what a cult is before accusing people of being in them.They're not creating from zero here, folks. Making a balanced psionics system - even one that does not operate like spells do - would/will be based upon the mechanics of D&D. They know what appropriate damage is at a given character level, and they know how to balance abilities. The trickiest part of making a psionic power source work is not the mechanics - it is the lore side of it. They have to find lore that gets wide acceptance in an audience with people that resist psionics, and dozens of cults that each have a different idea of what psionics should be.