this can be done (and it would be almost trivial to add to a PHP or ASP based web program), but I would doubt "the powers that be" would be willing to use it. I am firmly of the opinion that one of the primary reasons for "streamlining" centralized dispatch is to have _more_ control over the dispatching, not less control.
This does sound like a good thing to add to a program for customer relations management for independents. Thanks for the input/idea.