it's not like this is any better on the engine's own websites or calendar searches. i have the paid version of roame now, but one of the pluses is seeing a search that spans 7 days, or a cached one (the skyview) that spans more; there is also a filter (although it only works after you retrieve results) to set a minimal threshold of travel in premium class. eg. to make sure your trip is mostly business from SYD-SFO instead of just SFO-LAX, you can put a minimum threshold here like 75% premium.