Agreed here - a Siamese Seal with the most recessive fur as a hidden trait is a hundred times more useful than it'd be if the shown fur was the 2nd most recessive. Basically a cat like that is utterly useless to anyone that doesn't have the opposite gender that ALSO hides the same fur.
So, breeders - get some sense and make use of those beautiful and VERY nice Siamese Seals! Breed 8 fine traits on that fur, and you will be ahead in the game next time a new true recessive comes out