Det Comds are often misused by the unit or the incumbent knows it is a non-job so just occupies themselves with whatever else is going on in the unit - adv trg, ents committee etc, etc,.....
I think the post should only last 12 months maximum. In that time they should deputise for everyone within the Det to get a feel for what the guys actually do, so when they become an RAO they actually know what they are talking about. (I am obviously referring to DE Offrs - LE's should move straight into RAO slots).
They should start at Coy level for a couple of weeks at least - let the JNCO who normally does the job get some extra leave in or do adventure training without having to come back to a full desk. A month at least should be spent in the Regt Acct office, mess bills, balance the stock sheets, end of month procedures etc, etc. Another month as FSA and then after being in a unit for 6 months or so cover the RAO desk. As a swan-song organise the best adventure training package the Det has ever had the pleasure of attending to show the person can actually organise something and then move on. (I acknowledge that the adventure training could only be over a weekend as there is no way on earth you could get a whole det out of camp for a full week!!!).
Basically make the Det Comd roll an educational stepping stone for young officers, I know they and the rest of us would benefit in the long run.
Just a thought.