Ruminating about the tricky subject of psionics for player characters in The World's Most Popular Role Playing Game I have set upon some structure for my first draft...

1. Psionics for PC's are rare, 1% chance, no modifiers, so that any charcter has an equal chance for psionic ability.
2. Characters with psionic ability will roll their psionic attribute, 3d6 + combined Intelligence, Wisdom, & Charisma modifiers.
3. The Psionic attribute score will determine some simple psionic abilities that are usable at will, success chance DC modified by the standard attribute modifiers from version 3.5.
4. Characters with psionic attribute above a certain number, say 12, gain a psion level and have the opportunity to take additional psion levels based on gained experience points which unlock access to psionic powers (i.e. those from the d20 SRD).
5. Use of level-based psionic powers cost hit points scored as non-lethal damage using standard non-lethal results and healing.

Okey-dokey, now's time to put electronic pen to electronic paper!