I agree with sbm12 that the introduction of one-way awards would likely lead to shifts in the overall value proposition of OnePass that would result in a net negative for myself and many other FFers who primarily use FF awards for multi-destination international trips, taking full advantage of en route stopovers and long (and often, multiple ) connections. I have not yet seen a major legacy airline, in North America or elsewhere, introduce pure one-way FF awards (at 50% of RT) without also featuring limitations that often result in additional miles being spent, or otherwise frustrate the usage of the miles. BD does fuel surcharges and tries to bar partner carrier redemptions (and even changes) less than a week before departure. And keep in mind, "limitations" need not only refer to stopovers; COers benefit from having a pretty generous routing ability on awards, and that would likely go away under one-way awards as well.