Why don't NC cigar makers put dates on boxes?

I know pepin has started dating some of his boxes but why doesn't say padron, fuente, La Flor, Oliva ect throw a date stamp on their boxes. It would be more important to premium say 8+ dollar smokes. It would be nice to know that the Nester Miranda special selects I just bought where rolled in 2010 or 2000 whatever so that five years from now I now how much age they have on them.

It would also enable to rate cigars like wine based on vintage instead just assuming that the blend has never changed and that the quality is the same. I think it would help keep cigar manufacturers in check. Nothing is worse than loving a cigar and all of the sudden something changes and you have know way to quantify why. VSGs are a great example. I feel they are different than they used to be but can't put a finger on when things went wrong. Oliva V is another stick that seems to have changed about 2 years ago. Fuente anejos and opus would be great products to date.

Rant over