Too many "person" powers. Obviously Hold Anything is not balanced at 2nd-level. Psions used to have somewhat different powers, for instance, 2e's Id Insinuation was weaker than Hold Person (no defensive penalties) but worked on anything with a mind. (I have no idea what 5e Id Insinuation is, though.)
Instead of Dominate Person, just Domination, with a drastically shorter duration. A bunch of spells could be ditched and replaced with more appropriate powers.
Subtle Spell should be by default. Note that psionics also shouldn't have components for most powers, and... yes, that makes psions powerful, so they have to pay for that somehow.
Where are the defenses? Psions in 3e had an equivalent to Mage Armor, called Inertial Armor. The power is basically identical, just with a more suitable name. Or do it 2e style (weaker defenses, but proficient in light armor automatically, no proficiencies means no issues with armor). 3e style is easier.