The lawmakers certainly need to learn the lessons drawn from the contact-limits adopted from the current Premiership 'trial', and for the good of the game, improve on them.
The game has, for too long, majored on dominance in the set-piece (and I say this as someone who played all his rugby in the tight-five).
For me, refs need to learn to referee the scrummage - not try to manage it. They need to concentrate on correct delivery to a static set-piece, and a correct non-foot-up strike in the tunnel. Any deviations should be penalized immediately.
I once read a fairly lengthy dissertation on ball-in-play analysis of both codes. RU was something like 30 percent ball-in-play compared to in the region of double or more that in RL (those figures are from memory, but the proportions are somewhat correct: the RU figure was staggeringly low).
Spectators surely want to see ball-skills, and stretched defences, rather than semi-static brutal attrition occasionally broken by a backs move.
I do.
The RFU doesn't have much time left to learn.