People moaning about not getting to taxi should note that its actually not that much fun, besides you get to do it all day when you get an upgrade. I've never heard this described as an issue before, and in my outfit I'm pretty sure none of the FO's are that desperate to taxi, regardless if they have 500 or 5000 hours on type. One tiller works absolutely brilliant, and the incap argument is not valid, you can manoeuvre the aircraft with diff brakes if you really have to.