What we should do is use our experience(s) to curb youthful exuberance and guide them in a way that will mean they don't make any mistakes. When you look at the modern day cadet, if they age out at 20 and come in as staff they have a potential 45 years+ volunteering as adult staff. Not many current staff seem willing to 'pace' them through this and seem almost intent on dumping them in the deep end, leaving them to inflate their own rubber ring as it is pushed as uniform is the only way. Quite easily you could translate this to 5 years as CI to acclimatise to 'life' which includes uni, before going for uniform and then a minimum of one tour before being considered as a sqn cdr whether Officer or SNCO. Yes we need to embrace the SNCO sqn cdr which stops the 'no OC' argument, which probably alludes to there being no officers.
It's a balancing act about treating them as full members of the staff team, given we haven't got the extra two years and fewer older cadets on average, they are still having to do cadet NCO things as a priority. I don't quite know what model HQAC were working to when they drew up this notion, but it doesn't reflect what happens in reality. In my last 2 and a bit years I did less and less cadet stuff and more staffy things. There was a group of younger NCOs who only needed a guiding look over once in a while.
Do we appoint older cadets into staff roles, if you have staff to do them just to appease some odd notion spawned of no experience of the coalface like so much that emanates from HQAC/ACMB.