My earlier post is not exactly correct. The funeral train was made up of 11 cars. The mourners train that preceded it was 9 cars. Finally, the train that brought UP4141 to Nebraska was 21 cars.
So an 11 car set is well within range. However I maintain, by the time a set would come to market, I think a large majority of the interest in this set would unfortunately have faded.
So no, I don't think its a PR decision, it's purely business.