It seems to me that this thread is encouraging pilots to give up a service. Many on this thread are already convinced and they will convince others to make the call "Changing to CTAF" and this will result in aircraft no longer receiving notification of traffic. I believe that this is undesirable. An aircraft may not respond to traffic because he is too busy but the most likely reason for not getting a response is because the call requiring a response was not heard and so it needs to be repeated. Someone has decided that it is possible to monitor both CTAF and Centre at the same time and this allows me to keep the services of Centre for a little longer, effectively an extra set of ears and sometimes eyes to help keep me out of harms way. I have no intention of giving up this extra layer of protection.
If all pilots reported "changing to CTAF" the bean counters would see that centre was making significantly less radio calls and give them another sector or two to deal with.