It isn't going to work. All they are doing is, as said, making the kids not want to get the Happy Meal variant, so they will get something more adult orientated in terms of food.
Sorry Kinder Egg; you can't offer a toy inside either, so you will now simply be an empty shell of what you once were
When i was younger the only reason i got a Happy Meal was for the Toy. Food didn't fill me up. If the was toy banned I'd get a bigger more unhealthy meal that would fill me up!