User blog comment:TheUnknown285/Things You Do and Don’t Want from ME4/@comment-4950455-20140617023204/@comment-1679409-20140617032126

I agree. One case that comes to mind is in ME1. During a conversation with Garrus, the dialogue says something innocuous to end the conversation. What gets said is a terse "I don't have time for this." I mean, come on. You can't be rude to Garrus.

Also, Bioware is actually doing your suggestion about displaying what will be said on the dialogue wheel word for word with Dragon Age: Inquisition.