Just as the title says. Right now, the stat is basically useless, because putting points into DEX can achieve far greater and farther reaching effects. So, I would suggest some psychic powers that use the PER stat as a basis for learning, power, etc. etc. to make the stat a little more valuable.
I would propose a rare, special event inside churches (hidden cult basement?) that will let you “learn” the hidden skill psyonics.
Only way to raise psyonics is to use them, and they would have a “power” bar and cost similar to bionics.
To balance, you can only regain psyonics power by “meditating” (by waiting, and if you have psyonics instead of just waiting you meditate), very, very slowly over time.
But to further balance psyonics, and because they are kind of evil, I propose that the different “abilities” should damage the player. So a sort of risk-and-reward style. Like, a “blood boil” ability that damages living creatures but causes you to bleed. Or a mind-takeover ability that converts a creature to your team, at the cost of some pain and a “headache” stat (-1 int, -1 per?) etc. etc.
You would automatically learn new abilities over time (make it like a 0.01% * psy levl per turn or something)
Bionics and psyonics should be incompatible with eachother, due to the imbalances of the body and mind bionics induces.
Thoughts?