I think the discussion on cameras in Blackberry's has been explored in full -- simply won't happen. There are too many corporations that don't allow ANY cameras in the work place. This is one of those cases where the consumer gadget actually causes a corporate problem. My guess is that RIM NEVER goes there.
On the other hand, there are many consumer gadgets that have no impact on corporate issues at all: sound, image, PIM functionality, Bluetooth (kind of -- once security issues are addressed) -- I hope/believe that RIM will slowly but surely offer these options on future devices.