The proliferation of Tango fares on international routes is proving to be a major hassle for me. With a corporate travel policy requiring lowest fares, this means a lot of extra gymnastics to get booked into T+ (and eligible for eUpgrades, and with full mileage credit). T+ isn't terribly expensive on YYZ-NRT but the presence of the T fares means I can't select it on our travel system, unless there is no T fare available for the flight. Ugh. This game just got to be a lot less fun. Again.