That's pretty much the spec the Mk.3 might have been a few years ago. Sadly the DIN format is starting to become so niche that I doubt there is any mainstream opportunity for a high end aftermarket head unit. The opportunity has to be in OEM, or interfacing with OEM.

Even that opportunity is slipping away and we all realise by now that hacking an iPod into the system is how it's going to be for most people. Those hacks could get a lot more elegant though.

Rob