Well people want great service but most of them don't want to pay for it either. USPS is already losing money every year. Personally I think the current tracking system is good enough. If they implemented something like your carrier suggested costs would go up. (and presumably shipping prices unless the government absorbs additional losses on the postal service)
That would have to be one heck of a coin to risk the serious federal charges of robbing a postal carrier of the mail.
Got my package about half hour ago. While waiting, I mused: USPS delivering Zombucks. Can it get anymore ironic? Hope things work out for you Mainebill.