It seems to me that any time we're seeing one particular time becoming difficult to get anywhere it means that another time has become easier to get....barring flukes where a majority of members decided not to travel in a particular year and banked all their points, then all went to use double points in the following year....but then it would mean that one year would be super easy to book and the next would be rather difficult.
Or the developer points issue. Right now there seem to be a lot of developer points - and some people seem to suspect some creative point accounting is going on on the DVC side to support that.