I may have missed this in the book, if so sorry for clogging up the forum.
One thing I've been wondering about - the nature of an unoccupied morph body. Say you purchase a couple of different ones, where do you keep them when you aren't using them? Is there specific "banks" or "dollhouses" that will keep a hold of your body when you aren't using it? What about in the field? Do you have special "coffins" in your apartment to keep the bodies in? Do biomorphs retain use of their autonomous functions to ensure survival (feeding etc). Would you ever end up with "zombies" where transfer fails and the biomorph is awakened but there is nobody home. Is there a way to stop a morph being downloaded into your body in your absence, other than the nanotat/nanoid record? What happens if you are using one body? Could an corp be renting out your sylph without you knowing? I suppose would you care? I suspect you might, since presumably you had to pay for the body in the first place.