A return to the 4xreserve system is the way to go. It will weed out so much of the crap that has entered the game, and eliminate the "need" for many of the vaunted "changes". However, I cannot see much hope for improvement any more. The NRL is ruled by News Ltd. The interchange serves television, and came in during the SL era. They won't let it go. They don't give a sh*t about the game, only how "sexy" it can be made to look on TV.
Big guys running around, on fresh legs, in bodyhugging muscle shirts will be seen as a better money spinner, than guys with rubber legs, looking "dorky", because they are stuffed, and cannot catch some "weedy" little guy. Even the wrestling would be viewed as a desirable aspect to these vermin. It isn't about the game anymore. It's about marketing and "sexiness". Buggered players, making mistakes, and missing tackles isn't "sexy". Makes for fantastic rugby league. But won't sell Hondas. Given the choice between old school open play, in wide shot, and big men wrestling in close up, I'm
betting they'll go with the latter.