I do not like purely text-based interaction. Why?
It's said that the camera, as in cinema, etc., is condemned to forever show us too much. The lack of same in games, however, suffers from the opposite: the lack of a camera is condemned to show us too little. As a longtime tabletop roleplayer, high on my list of frustrations with the medium is the difficulty of getting everybody on the same page as far as what a scene looks like and what is going on.
This is not such a problem if there is only one person, a writer, acting on an environment, so I agree with Mizhara on the power of text when I am reading a book. However, the moment you add a second person, inevitable differences in imagination become crucial.
Consider a crowded bar, like The Skyhook on a busy night. Who is sitting next to whom? In what order? Are there vacant stools in between? How many can sit at that table, there? What colors are the bottles? If I stand behind Mizhara, am I then over Kyoko's right shoulder or her left-- or am I still ten feet away?
Without a thousand finicky little details, your visualization will not match mine. Everybody's vision of the bar and the spacial relationships of objects within it, as they /emote, becomes kaleidoscopic.
NwN had static faces and limited emotes, but it at least made it easy to keep track of who to ask to pass the bottle of habsmefaaj. This was a massive boon to RP, since physical relationships became ever so much clearer. All the actors occupy the same stage.
Now, I do worry that Incarna's advent will drop interactions of the sort Mizhara describes into the "uncanny valley." NwN avoided that neatly by lying way over on the far side of it, graphically-- your characters provided markers and a certain amount of visual data, but, with characters less emotionally expressive than your average cartoon, your imagination had to provide an awful lot. Incarna won't be like that; it's going to be pretty near photorealistic, so CCP is going to have its work cut out for it if it wants us to empathize with our avatars rather than be creeped out by unsettlingly not-quite-human qualities.