The Partial Skull has a LOT of media to draw from. Tharok from the Legion of Super-Heroes and Halfjack from Champions are the easy ones, but also this guy:

Lobot!
The mental image I had in mind was a quarter of the skull... so, if you divide the head in half along a vertical, and horizontal, axis, the upper true left quadrant would be chunked out and replaced by chrome, resulting in a single cyber-eye and cyber-ear, and a chrome plate for teh cranium, leaving the other uppe rhalf of teh head, and all the lower part, untouched. You could have some kind of faceplate ala Iron Man, which hid your forehead, both eyes, and nose (but left your mouth uncovered), or have the back of your head lopped off and replaced with steel and circuits for a more easily-accessed bit of cyber-brain upgrade.
So, you can style that sucker up.
And, honestly, you *should* style it up. Give it a nice backstory. Maybe your character had a cranial bomb detonate inside 'em once, and had to undergo major replacement work and still has a stutter because of it. Maybe they just got a strip running fro the bridge of their nose to the back of their head, so that they could implant a series of spikes on top and have them strongly rooted in metal. Maybe they have a thing running from one temple all teh way back to the back of their head, leaving the eye and ear fine, but the rest is a motherboard with chipjacks, a datajack, and who knows what else plugged into it where you have constant easy access.
There's more to it than a simple mechanical benefit after all.
