If JWs REALLY cared about making disciples they would never use outdated ways to get their "lifesaving message" across. Knocking on doors, KNOWING that MOST people aren't at home, is simply a waste of time. Driving around from one part of town to the other side in order to stretch your time, while doing return visits is simply a way to NOT reach people as quickly as possible.
Doing the "pioneer shuffle" is another method to waste time. Pioneers are known to survey the territory and very very s l o w l y agonizingly walk the street.
Elders are known to either stay in their cars and talk "very important elder talk" (their taking the lead) or they'll wind up talking to each other on a street corner while the service group waits for their next instruction.
Now let's say a publisher finds some interest and leaves a magazine or brochure, then what?? How long does it actually take before that householder is found again?? Weeks or more likely MONTHS??? Either the person is never home or the publisher just doesn't go out all that much so another opportunity is lost!
Telephone witnessing is a horrible idea! Do you know how many people I hang up on every week that try to sell me their services?? NO ONE wants to be talking to a telemarketer.
Now here's what I think: if the "End" is sooooooooooooooooooooooo close, clooooooooooooooooser than ever before, the Society should take their billions and use the media to effectively get the message across and save billions of lives....but they'll never do that because they REALLY don't care!