The points idea has been bandied about before, and I really like it. It's biggest drawback, iirc previous discussions correctly, is the fear that rep coaches will manipulated the system by naming a player they've got no intention of playing, just to help out a favoured individual / team / coach etc.
Now, that's valid, and it WOULD happen, and the ensuing uproar would be the forum-melting bitch-fest we can all imagine, but I always like to look for a reason for it to happen, not a reason NOT for it to happen, so I'd like to see it implemented.
However: the NRL is reactionary (at best!), so the real issue becomes "how many people care about it, and how many people feel STRONGLY about it). And the clincher: "Is anyone writing about it?"
Current shenanigans like Lote-gate and so forth are treated by the media with a half-grin and a wink, and I believe that's the major issue. It's not a high profile issue, and the NRL will never be ahead of an issue before Crash or Weidler write about it.