I think you'd want the complete opposite to happen. Have the McLaren right at the back and the most pig ugly car up the front. If the McLaren demolishes all then the FIA wont have any reason to change the rules to force less ugly cars. "See, they can do it with a low nose, whats your excuse?"
McLaren have been saying the car will change between the launch and Jerez. Anyone wanna bet it pulls out of the garage at Jerez with a stepped nose like everyone else? (I hope not!)
STR7: http://www.ausmotive.com/2012/02/07/scuderia-toro-rosso-unveils-2012-f1-car.html