Comments - MarkyDMan

One suggestion I have is incorporate some sort of locking device, as if the suit is detachable. Maybe inbetween the shoulder blades, where the hexagon is, have a lock-like device.

Also, maybe you could have a HUD piece actually integrated onto his wrist, so in game you see your ammo and armour points on the HUD-band as if you are the character, and not a player in the game.

For lack of a better analogy, like the cloaking timer for the Spy in Team Fortress 2 just permanent, smaller, and showing ammunition for your guns

Ditto for Ryan Chambers, I'd say armour 4 bearing in mind if you enhanced yourself with robotics, you wouldn't just fix yourself ;)

It also looks the most badass, and gives the most scope for having a helmet piece should the location or conditions require - the neck piece is a really good way of making air-tight helmets feasable compared to the other armour that feature less bulky neck pieces.

Just my thoughts