I've thought about this, and I've decided its not for me.

I'm all for immersion (Tateru would prefer another word here) and improvements in puppeteering. But I think always following a camera or following a mouse is wrong. Anytime I look at a glass of soda RL, my avi's head will turn? That's as bad as watching my avi's head turn every time I use the Inventory or IM windows, or use a menu. I don't see how adding a second source of movement is an improvement.