It has to be a technical issue as to why they haven't released this deck. Basic economics suggests that if there is a demand for a certain product/service..you supply it - you make money, so I can't see any reason why they wouldn't reissue it from a money making stand point
It is cause they have a bunch of pre cut pig shapes and just heat transfer multiple designs onto them. So that cuts down on production cost and have a lot of supply around to release. Making more money that way. With the McGill Snake Skin shape there is not another design like it (shape wise) so it would not make sense to produce it cause it can only be use for one design. Ok that is just all a guess.