I personally can't comment on the matter, haven't been actively playing until US72, so I wouldn't know about the past couple worlds. Personally, I have always been turned off by Marathon Worlds as I like to call them.For everyone turned off by the server, there's a 4/3 conq no morale on EN that drops the same day.
Otherwise the COMA hit it right on the head. One thing I noticed with the US before is that it kept dropping fast servers in hopes that it would get large clusters of other players to the US. But that never consistently happened and in my experience when other groups showed up, they didn't commit to it.