I was thinking if perhaps a talent for Rank should exist in the game (for Guardsmen, Arbitrator and so forth). This rank talent would add a offset bonus to Command and Command like tests performed by the individual when dealing with those they outrank. However, the rank bonus itself is never counted when totalling up degrees of success, but does extend the chances of a standard success.
For example, a Sergeant with Command, a Fel 35 commanding his squad. By right of his rank he gains a +10 bonus over his troopers. However the +10 is only counted if he rolls a 36-45 on his Command Test. If he scores a 23 he still only gains one degree of success, but on a roll of 26-45 he gains a standard success.
In my military experience I have seen situations where Soldiers do as they are told by virtue of the rank of who gave the order, but generally I never see them really motivated or inspired unless that leader is actually good at his or her job (high Fel, good Command skill).
For me it would be a modified version of the Peer talent, but more specific and possibly larger bonuses available. But it doesnt always count, as the Sergeant wouldnt get the bonus when bossing a Colonel around, an the Colonel's modifier would be lower when used against a Major then when used against a Trooper.
This is just one of the ideas that have come up as I have been writing some new background packages and alternate ranks for Guardsmen.