I think the NRL ought to look at establishing a genuine schoolboy competition, working with schools all across the country. From there, and working with the Government on this initiative, players are scouted and offered scholarships to universities nationally. This would form a university competition on a state-wide basis with players completing tertiary studies. It would replace the under-20's Holden Cup and national championships can be held on Grand Final day.
It is similar to the NFL draft, so that each year when students graduate at around 20-21 years of age, they go into a draft for the NRL. At this point they have a degree and a few years of football under their belt in a state-wide/national comp with prospects outside of football. Players who don't enter the university path can still make their way via the NSW and Qld cups.
The other consideration needs to be made on the salary cap. Whilst a grant should remain to clubs, the issue for people is that there is no transparency. The NRL should embrace as much money flowing into the game as possible, a lot of which seems to be "under the table" at the moment.
Instead, players are allocated a value under the salary cap according to their experience such as NRL games, Super League games, Rep games etc. A value is attributed to each point which the club must pay that particular player and tallied at the beginning of the season. A mid-season transfer window will also allow for a re-balancing. Given this is a simple statistic that is recorded, this methodology can be fully back-tested for results over the history of the NRL in order to formulate a fair price for each point/individual.
BUT - here's the catch. A club may decide to break the salary cap and spend over their allocated grant. If they do that they must then pay compensation to a central pool of funds which is then distributed back to clubs who are under the allocated number of points. A similar system works in Major League Baseball.
This essentially provides for clubs both ways. Rich clubs can pay players their true value and field superstar line-ups every week. However, the money in the pool of compensation will allow for the weaker clubs to remain financially capable and given there is a draft in place to compliment the salary cap, the compensation they receive can be put towards retaining talented players they groom from that draft in future years.