I wish they offered four-wheel-drive across the diesel powered models as well. Something like "335d X-drive, 535d X-drive and 740d X-drive".
An M5 F11 and a lightweight S65 powered Z4 coupé.
But above all else, I wish they weren't so mean; a 550i M-sport costs £53k and it doesn't even come with split-folding rear seats!
It's a £370 optional extra and that brings me to another problem: The optionals are ridiculously overpriced. £370 for split-folding rear seats, £260 for anthracite headlining, £285 for the shadowline exterior trim, £420 for powered boot operation. 370 quid for split-folding rear seats... Come on BMW... That's overpriced even for Lord Alan Sugar standards!