Madness Feats

[Lord Iames Osari]

Since these didn't get any reviews during the psionics contest...

Madness [Psionic, Insanity]
Your mind has snapped under the strain of your psionic powers.
Prerequisites: Any chaotic alignment, ability to manifest psionic powers.
Benefit: You gain immunity to all effects that cause confusion or insanity, but take a -2 penalty on interaction skills (Bluff, Diplomacy, Gather Information, Handle Animal, Intimidate, Sense Motive).

Mad Clarity [Psionic, Insanity]
Your madness sometimes makes you difficult to control, but other times you are easily manipulated.
Prerequisite: Madness.
Benefit: You take a -1 penalty on Will saves for every insanity feat you possess, including this one. Every time you must make a Will save, you receive a +1d20 insanity bonus on your saving throw.

Shifting Madness [Psionic, Insanity]
The mercurial nature of your madness makes you difficult to control.
Prerequisites: Madness, Mad Clarity, Cha 15+.
Benefit: You gain the slippery mind trait, but take a -2 penalty on Concentration checks.

[ghost_warlock]

I like Madness and Shifting Madness but I'm not sure about Mad Clarity and the +d20 thing. DRAGON 330 & 332 have some pretty good insanity-based feats you might want to check out if you haven't already.

Another Idea:

Mad Sacrifice [Psionic, Insanity]
You're willing to sacrifice your sanity to inflict your will on others.
Prerequisites: Mandess, manifester level 1.
Benefit: You can take ability burn to your Wisdom score to increase the save DC's for your Telepathy powers. For every 2 points of Wisdom you burn while manifesting a power, you increase the save DC by +1. This bonus stacks with any other bonuses to the save DC's of telepathy powers you might have.
Special: You cannot use this feat if it would reduce your Wisdom score to less than one.

[Lord Iames Osari]

The idea behind Mad Clarity is that sometimes, you're really easy to manipulate, but other times, you're just too crazy to control.