every time i see these guys, i imagine them in a courtroom and that the sergeant (g) is having to defend the hacker (d) and the contractor (c) because he went to law school before he joined the army everyone is else is sitting in the back
funny, because i imagined that "B" is a criminal and "F" is defending him. "A" is the jugde and "E" is the prosecutor. "G" is the CSI leader with the rest of the team being "C", "D" and "H". The funny thing being we both imagined them in court.
I think the super-soldier (B) and the assassin (F) might be siblings... Nick did give them a similar color palette and design But I don't think the nationalist (H) would be a very good investigator (he's got no imagination)
generally i dunno much about the different types of spartan armor (i've only ever played halo 1) but actually i based his armor off of concept art from the old X-com games with few halo tweaks here and there though