Hey, new user here.
I've always been intrested in psychics, and I've had a brainstorm on the psychic warriors.
I think instead of making them fighters with psychic abilities, they should have some unique psychic abilities of their own that focus on combat. Like the psion, they choose a discipline. Unlike the psion, they get no discipline spells but they do get special abilities depeding on the discipline that have a focus on physical combat.
Clairsentience: Fighter that can see the future. Mostly defense minded abilities with some offensive ones that involve predicting opponents movements. High ability: Rerolling a die.
Metacreativity: Can't really think of something that wouldn't overlap with Soulknife.
Psychokinesis: Lots of options here. Can choose basic telekenesis (moving objects or opponents) or one of the four elements (cause every loves pyrokinetics). Kind of like the sorceror bloodlines, only with basis on martial combat (flaming weapons, eart turning into quicksand, water in opponents lungs, air balls, flying with telekenesis...)
Psychometabolism: Focuses on psychic enhancement of physical prowress. The warrior who feels no pain, for example. May have some self-healing or transformation abilities.
Telepathy: Reads minds. Can predict opponents movements like the seers but focus more on psychological warfare. Can also help out allies by reading their minds.
Psychoportation: Fighter that can teleport across the battlefield. High ability: Full attack plus warp to another location.
This is just brainstorming, but it lets the psychic warrior have a unique flavor.