This is an argument that I was making during the whole Suarez affair that the usual suspects misinterpreted as me defending Suarez's innocence. I think it absolutely incredulous that the country and FA get up in arms about the relatively harmless act of biting yet almost endorse good old fashion thuggery even if it ends with a serious and career threatening injury. I always compare that Rooney elbow to the head of a Wigan player, it was 50 yards from the ball, and Rooney was running at pace, and elbowed him in the head whilst the guy wasn't watching, it was a scum bag sucker punch and could have seriously hurt the player, but nothing. Suarez on the other hand rather disgustingly takes a nibble at someone, caused next to no harm, and it's a national scandal and he's banned for 10 games. As you say, blatant acts of aggression / dangerous play need to be taken more seriously and need to result in bans, ideally 5+ match bans so they're actually taken seriously, but this country has a love affair with the no nonsense hard man, as a result I can't see it changing anytime soon, only way I can see it changing is if there is a high profile ending of a career, which is a tragedy.