There needs to be something which doesn't reward diving.
Maybe something like mandatory time off the field (10 min? or more) with free interchange if you are down on a reportable offence. This is to include sore necks.
Yeah, I just saw the Napa/Wallace one. Geez, that was a hard watch. It's so sad that that's where we are. And if we were to do a post mortem on other binnings, we'd find a few other which we just as cynical and symptomatic of a decline into a sport which we never wanted Rugby League to become.
Mandatory time off the field seems like the most sensitive way to counteract players diving. I guess the thing is that, the way the rules are at the moment, a hit like Vaughan's, or Lawton's, or Napa's is deemed (in the moment) to be a reportable offence- thus, earning the side a free interchange via theatrics.