I think you are right, some cards just don't get released, but I reckon if they don't release them, they should take them off the set checklist. It's not fair on the people chasing the sets. A worse thing happened to me with a signature shots 04-05 exquisite set. I had 13/14, got the final one (Luol) as a redemption, sent it off to upper deck only to find out that they didn't have the card in stock. They advised it was short printed or something, and replaced it with a crappy card. Majorly pissed!