@SteveCagigas - I believe the 2020 OA national chief is only registered as an ASM with his home troop in Virginia. The 2019 national chief was registered as an 18+ youth in a Sea Scout ship.
I’m not currently involved in Venturing, but, when I was, I felt it was a terrific program for the 18 to 20 year olds. They are still getting used to being adults. It would be a shame if they lost this and Sea Scouting for the sake of saving money. Let’s be honest. They can vote and enter into contract, but, in many ways, they are still youth.
If this is extended to the Order of the Arrow, the logistics will be hard to overcome. The national chief would have to have his or her 17th (or earlier) birthday during his or her term. The national officers do so much traveling around the country to represent the Order, it has to be convenient that the officeholder is a YPT adult. In addition, how can a high school student manage that schedule? It would also likely limit candidates for national office to those who made Eagle 16 or younger. There are many great young people who are only 16, but could the OA identify six of them every year that can make the type of commitment required of a national officer?