I do not disagree with you.
Sadly, it is next to impossible, in this day and age, to make this system work. Why? Not only because there just aren't enough motivated people left out there who are willing to make those calls, but also because if EACH candidate on the ballot uses this system, the voters are still swamped with calls, and the voters still get honked off the last week before the election with calls from each candidates organization.
Yes, each County and State Party COULD organize and implement a program of this kind. But getting the candidates to agree to cooperate, and NOT swamp the voteres with calls, recorded messages, what have you is just not going to happen.
I've spent the last 15 years inside the WAR ROOMS of various campaigns. The biggest problem I see with the entire system is the "White Knights" sent in at the last two weeks to attempt to save a campaign. Generally, they screw things up so badly, it can't be saved. LOCAL people, who understand the locality, should be making the last minute decisions.
I've seen more candidacies tanked in the last 10 days of a campaign because of some outside EXPERT, who doesn't understand the local mindset, than I care to think about.
All Politics is Local. And successful campaings are local, too.
What works in a metropolitan area does not work in a rural area.