It is so stupid, the body is bound to come down first because the tackled player is trying to get too ground and get the ball to the floor. You can normally tell by the reaction of the tackled player, he doesn't care anymore than if he stubbed his toe on a table. The rules have to be there too stop players being driven head first into the ground but this isn't dangerous.
You can run at the kicker as soon as they make a movement towards the ball. If you done a fake run up you would still be moving towards the ball, they can just run up to you and pick up the ball. People only really run at players when it is an easy kick, if it is on the touch line then you don't normally bother as the kick is hard enough and it probably wont make a difference. Shouting at the player is not allowed and is against good sportsmanship
I don't know if I am understanding your definition of tip tackle. Being lifted in the air and slammed onto your back is still a legal tackle, being slammed onto your neck and higher is then a problem. I think that people's welfare is now more thought about since the game went professional, I have no problems with the new rules(i'm not saying you do) and I think it is better that we have these rules nowadays. Remember these are just guys trying to make a living.