well brabus being a tuning company, all the bits ARE afterthoughts... that's no excuse for them being so ugly though.
now if i wanted to make the latest mercedes go faster i'd do something like this
that choulderline over the wheelarch just begs for something to fit over it, just make a smooth panel that goes over that entire surface, redesign the bumper (wich they do anyway) to blend with the sheet...
perfect smooth lines... they could have some ribs or whatever on it if they must...
than again... i'm still shocked that they really did this... it basically means at some point they realised there was a lot of speed to be gained from this mod... it's a big thumbs up to anyone doing wheelskirts