I am a Psyker main. I feel like the surge staff was valid to be empowered by Empowered Psionics. It makes sense for the only character that can wield a staff that connects said staff to their talent tree and be able to weave that into a play style. They have a lot going for them as add control but when being the last survivor of the team and have Specials, Elites, and a Monstrosities to deal with, they need that up to their power to be able to have a chance to rescue their team mates.
Now I had to change my tactics and play style a few times since this game came out and its becoming a bummer to me. So far there has been consistency with these patches and the surge staff. I feel if you gave it a increase in damage for its secondary ability, at the cost of increased peril, I feel like that would be a fair patch, cause those staffs were life savers. I feel like Harry Potter when he first held a wand and didnāt know how to use it, just waving it around and saying gibberish!