I am also a big fan of having more flavored varieties of psionic powers.
I think it would be nice to have more choices for more things. Between, say:
An overwhelming psychic force, who hits you with psychic energy like an ice-blaster hits you with cold, or a stone sentinel blocks attacks with stone.
A tricky illusionist, who outsmarts and deceives you, leaving their foes swinging at air, jumping at shadows, and surrendering to mirrors
A cruel pain-user, who just *hurts*, making their enemies miserable
A mind-melting empath, who dissolves the boundary between "you" and "me", by linking thoughts, feelings, and identities
A disciplined authority, who gets everyone working together