I seem to recall that comments were made (in this forum) when the phenomenon first surfaced shortly after Swanick became operational. It was not unusual to regularly hear comments from crews about the qulaity of transmissions from LATCC. The 'head in a bucket' transmissions didn't go away but crew comments (on frequency) certainly did; I can't recall the last time I heard any crew comment on the transmission quality, possibly because it was so normal that nobody bothered to say anything.