[AlexanderHowl]

I would suggest something different. Allow people to purchase the Psionic Talents and Psionic Skills, but I would not allow them to purchase beyond the first level of Psionic Powers. If they wanted to manifest Psionic Powers beyond the first level, I would suggest using the Power Corrupts rules from Horror (p. 146-148). Instead of calling it corruption though, call it 'psychic strain' and have any disadvantages that manifest be purely mental in nature.