Marshal Aid
I think the main reason it was done is to stop all the agro and 14 man debates at the end of games. By reducing the number of people watching you reduce the opinions. Is that a good thing ? I think so as most players have a bias or different view to the marshals any way.
Did it work ?. Where it was inforced but several times in Toulose it was't. Mainly the Pro teams, no surprise there. Same as shooting before crossing the line, enforcement was hit and miss !!
I think its a good thing for the sport, just a nause if you get hit early and can't watch then cretiqe afterwards. Small price to pay tho.