It works out sometimes. The tigers team posted above in 2012 has much of the core of the 17/19/20 Richmond teams.
Most clubs can make the case they have a good collection of young players. Suns and swans look handy going forward.
And even then only 10 of them really made it, out of 20+.
That is a phenomenal strike rate, and includes having one of the GOATs plus maybe 3 HoF tier players (although the standard these days could mean 4 or 5).
Most clubs aiming for 1 flag would be happy to have 8-10 come through from their current crop. 3 flags relies on 4 or 5 becoming top 50 with a few in the top 20.