I think I understand what you are trying to say... Because South Africa is one of the countries that has under 20 active teams it's really hard to compete with other teams with hundreds or thousands of players (at NT and U21 level). Due to the draft order priority, most of the good youth players go to weaker teams, usually teams that just were created, or teams that are in that chart position because they don't know or care how to play and train. Consider that most of the community doesn't even write(check) the forum or the game manual. So probably the best way to help the NT and U21 for these kind of teams is to sell them to other players rather then keep them untrained...
Also for the "big teams", that usually have higher expectations (wining the C'ship, Cup or participating in the B3) it is hard to rely on guys from South Africa with low potential that can't pass 10 points on their skills and have to compete against MVP players..
I don't know if you saw but some of us actually buy u21 players with higher potential (paying a lot more then players from other countries with same potential) just to help develop the youth team.
I hope on the future I'll get a good draft ^^
Cheers!