If a U20 Rugby Championship isn't a viable option then maybe they could look at running a 2 game U19 series against NZ around the Senior tests, to give these players some international experience. It wouldn't cost too much to organise and I think it would have a huge benefit to the squad for the following year.
Part of the issue is that these teams seem to be a bit like the Aust Cricket team, where it's harder to get out than in. If a player isn't up to it then don't pick him in the future, unless he shows you something to indicate his form has changed.
I do like the idea of a U20 state/franchise comp. It could be held early each year and would give more players exposure at a higher level. They could even run a U20 National Champs if that would be an easier/cheaper option.
Part of the issue is that these teams seem to be a bit like the Aust Cricket team, where it's harder to get out than in. If a player isn't up to it then don't pick him in the future, unless he shows you something to indicate his form has changed.
I do like the idea of a U20 state/franchise comp. It could be held early each year and would give more players exposure at a higher level. They could even run a U20 National Champs if that would be an easier/cheaper option.