Several of these are potential nightmares for the lonely community ref, independent of their relative merits.
The 50:22 is going to be a challenge with incompetent/biased/disengaged/non-existent club TJs. In terms of merit, I’m unconvinced - I guess the idea is to force a winger to hang back against the possibility of conceding a deep attacking line-out, thereby creating more space further up the pitch. Only way to prove it works is to trial it, but I’m not looking forward to administering it.
The goal-line drop out - I sort of like the idea of greater rewards for the defenders preventing grounding, but it places HUGE pressure on the ref and his/her positioning. Without a TMO, any doubt over grounding is a potential critical incident.
Team foul limit - I hate this in spades. Mainly because it’s going to be far too hard to keep a good track of penalties along with everything else the lonely community ref has to do. If a team takes a quick tap too fast for me to add to the penalty count, I have another potential critical incident on my hands. I also don’t see these things as being black and white - let’s say the limit is 6 penalties. If Team A accumulates their 6 penalties over 60 minutes for totally unrelated offences, I don’t feel they deserve a yellow card... but if Team B racks up 6 related offences in 12 mins, they TOTALLY deserve their yellow card. But very probably, I would have given them one anyway under the current laws; I don’t need a team penalty limit to enable me to do this.
And for the tackle height that headlines the article: unconvinced. The Championship trial saw an increase in concussions for the tacklers; I will be interested to see if the new trial concludes any differently.