Really enjoyed that aspect about Alpha Protocol.
You really had to learn about the people you are talking too in order to figure out the right way to talk to them to get the desired outcome, really added depth to dialogue since it was more reactionary rather than just sitting there.
It's only possible in Alpha Protocol, though, because you don't actually pick dialogue at all, just tone. Is that what we want for Dragon Age?
I like the dialogue wheel as it is now, personally. If BW can figure out a way to make the aesthetics of a "full dialogue on highlight" addition work, it'd be perfect.
I think timed wheels encourage you to role-play yourself, not a character. You rarely have enough time to consider what your character would do unless you're reeeeeeally into your character. I need a few seconds for each choice to know if it feels right, personally.