I don't think it's that stark, between dialogue options and the wheel.
Also, I do think that (faults and all) the Oblivion conversation wheel was a brilliant meta-game innovation (despite whether it was actually fun or not). :D
That, I believe, is the strength of writing as a medium for conveying ideas. I frequently notice that there are layers of subtexts that are quite beyond the conscious awareness of the author. After all, life is rarely black-and-white, and ideas are as complex as the environment they are reviewed in.