that only works for one subclass and we need at least two as that was the minimum set by the sorcerer.
how would you make telekinetic more than one spell of variants of the same spell it would need something more?
There's more things that can be done with psychokinesis rather than just moving things (though of course there's that). Off the top of my head: spontaneous combustion, concussion/project force/Force Push (this is using force to smack one or more targets, inflicting damage as well as shoving or tripping the opponent, and is similar to using a Ring of the Ram), the gyrator (spin someone so fast they take damage... in the book I saw this in, the target was losing limbs but that should just be flavor text for an opponent killed by the attack; a similar attack might lift a target helpless into the air while crushing them with psychic force), "internal attack" (target suffers from a stroke or ruptured organ, it's another way of doing direct damage to a single target), cryokinesis (target is damaged and also slowed, dazed, becomes more vulnerable to damage or even falls into suspended animation), and subtle (or not so subtle) inertial barriers.
The other obvious choice is telepathy, and if you really want to stretch things a bit, biokinesis and psychoportation.
Edit: going through Complete Psionics 2e, here are some powers that could be converted
Ballistic Attack. This is just using telekinesis to throw a rock, but suitable for a 1st-level or at-will power.
Detonate. Blow something up (the object must be rigid or fragile) and deals damage in a small area of effect.
Dissolution. Disintegrate, but with no beam attack. Unlike in 2e this needs to be a fairly high-level power, at least 7th-level.
Photokinesis: minor illusions (basically Silent Image) or a flash-blind effect. This attack probably does not deal damage, unless the target is particularly vulnerable to light (the undead, etc).
Soften: weaken an object, which could include a barrier such as a wall or door.
Control Body: grab control of a creature and force it to act. It's like mind control but you only control the body. (You can't force the target to cast spells or think of strategies, but it bypasses charm immunity.)
Powers on the borderline: matter manipulation (this is very/too similar to the Fabricate spell), Control Wind (flavorful but might be too limited)