Semi-Locked camera centers with spacebar

I would really love to use the semi locked camera, but since there is no way to center it again it really drives my ocd to hell having it be off centered by a little bit. Also there's no point not to make the spacebar center the camera, as of right now it does nothing, there's just a free button they completely over looked. now of course i am talking about using semi locked while Y is turned on. so please add this, it is the only thing keeping me from using it