I believe you can use the steering wheel and MMI controls on the hard disc. Seems to have support for text and track listings and stuff. 500GB limit on hard drive, but that's probably livable
The bluetooth dongle appears to also support ADAP and some limited AMI/Steering wheel control function too, though at a music hit.
There are three inputs, one is USB, two are 8pin mini din which they sell cables for. The USB can take stick/HD/Android/Ipod/Iphone however a bit of digging arround and you can get a mini din Ipod connector (and aux with power) so I think you can have a HD and Ipod that way (i have an ipod 30 pin to mini jack adaptor which usually works on most ipod cradles elsewhere)
Found this
http://www.ebay.co.uk/itm/Dension-LW...MAAOSwo6lWFmop
Which may give the bits to play with a loop the MOST bus arround. Still don't know if it will work as the Volvo version does that yet the CD changer doesn't work, which on my MOST therory sounds odd....Then again maybe they can't change the ID of the CD changer with Vagcom?
Lee