I disagree as an official myself it is leaving too much to interpretation, which leads to inconsistency which leads to officials being criticised. I prefer a rule which is definitive and leaves no room for ambiguity.

to me it is very simple, swing a punch, try to headbutt and no connection straight yellow
any connection regardless of where or how hard straight red

They're too busy IMO to do this and need to watch the biff to analyse it?

Let the kit men fight?

Stats men can analyse it, kit men are far to busy to get involved

Forgot about Radford. add him into the mix

Pub quiz

Who would win a fight between NRL coaches and SL coaches.

First impressions makes me think SL?

Surely SL, it would just be McDermott, Wane, Radford and a pile of bodies!

would have been red for both. I understand where you are coming from though.