As I said in another thread, I quite like the design of the BS5 hardware, but am not a big fan of the user-interface, from the images. I'll make a final decision on that when it reaches my local dealer.
However, there are other issues for me. I would want the BS5 to ship with a stackable BM5 that you could chain together. I'd want it to support the playback of DVD video so I can backup my DVDs to the BM5 and then use this device to show videos and photos through the TV and audio as a standalone device. I want a cheap basic two-way remote so I can see the content without having to leave my chair or go in to the next room.
I think a lot of people on here are so engrossed in B&O that they'll buy simply as it's new B&O kit. New kit always has to add value to my life and my existing setup. Although I have a ton of B&O kit, it's all proved useful, so far. The BS5, for £3800, is going to have to tick most if not all my boxes for me to add it to my collection.