Wait.. Robots have brains? I never.. oh wait, they don't. Why does WX-78 have sanity? I don't think if they had no emotions they'd start to go insane... Not nagging at the devs to change this, because that would be way to overpowered. So, if WX-78's sanity is removed, you could make it so that as WX-78 loses hp (or in a robot's term, power) the player will do less damage also. This may just all be a waste of time, but I'm just stating this.