for many years I think we have been doing checklists in the wrong manner.
Why, do we do the most important checklist while taxiing? Why not stop, set the brake and do the taxi/before takeoff checklist?
I like to do most of the descent/before landing cheklist before we leave FL180.
Only the most basic checklist for landing should be done around the outer marker.
And it is better to set some flaps, while waiting for takeoff data then not to have set anything. Most guys know their airports and planes well enough to have a good guess about flap settings.
We must go beyond human failings and make sure things work right (correctly)