I fully understand the need for scrum safety in the lower grades and semi pro level. In the dark ages there were a lot of injuries that have largely been prevented under the new packing process and the mayday call. That is really positive news.
Do we really need the Referee to take charge of Professional Rugby Scrums?
While the forces are greater in the modern scrum, there were no serious neck injuries at the top level in the olden days when hookers basically called their scrums into contact, and the Kees Mews implementation of the Mayday process after a call by Ben Darwin in 2003 is the only case I can remember from Pro level in the modern era.
A referee lead scrum can take up to a minute to pack on a good day. Archive footage shows that scrums were over and done with in under 20 seconds, and that included time for the fatties to practice all the shenanigans of the Front Row Dark Arts on each other.
Is there a case to conduct a trial at Stellenbosch or somewhere else where the pigs are given 10 seconds to pack a scrum with no referee involvement? Failure to pack in the allocated time is a Free Kick against the team that wasn't ready to pack.
If a props shoelace is undone and it takes more than 10 seconds - Free Kick.
If a 2nd rower needs urgent medical treatment and this delays their arrival at the scrum by > 10 seconds - Free Kick, or the No 8 packs at 2nd row and one of the centres goes to No 8 or they pack 7 down against 8 - whatever.
If a fatty needs to scrape the soil from his studs and this delays the packing by > 10 seconds - Free Kick. Keep your studs clean in general play.
Establish an Professional Front Row Certification such that if both teams in a Professional (or International) game can field Front rows with the Certification, the "10 second to pack" rule applies and the referee is removed from the process.