Hi Dennis,
sorry this has taken so long! I agree entirely. I think that moving the light gradually and interactively is key and I envisage this being exactly the interaction with the new viewer, whatever the resolution or zoom level. What the light position bookmarks allow you to do is to contextualise annotations however. So when you are trying to convince one of your colleagues you can send them the exact light and render mode setup you used, they look at it that way, and then modify it however they like to examine the veracity of your statement. To my mind this combines the best of a published figure in a paper with access to the physical object? In fact I would see this kind of presentation completely replacing published figures in years to come, much as Adobe PDF could with 3d data, but that is getting of the track I guess.
Cheers, Graeme