DOC 2 BE: Are you referring to the "My dates are flexible" option? If so, that's not what I need. You used to be able to specify a city pair and select up to 3 airlines (or all) and get a complete list of carriers, published fares, fare designators, and a button to show the detailed fare rules.

Expedia, while not as convenient, does give a much better display of the rules, valid routings, etc. So I have to work a little harder, but I get more/better info.