Gun Psykers desperately need +20% to reach meaningful breakpoints on many guns. Also, it wouldn’t hurt to give the melee a bit more oomph given how much survivability and damage staves are able to pull off.
Psyker are supposed to be the glass cannon class, now it’s just a cannon with staves and just the glass for the rest.
Something like “+20% NON-WARP damage scaling inversely with peril” would be really good as it would allow a 2 point invest into a constant melee & gun damage buff with warp rider.