Yes, that's true about the dates. The other problem I encountered with that was trying to buy a book from my library list when something about that book had changed - either the price had changed or it was a different copy or something. I kept getting a message that there was a problem with the purchase. I finally figured it out accidentally by just doing a search and finding out that the price was different and buying it from there instead of from my list with no problem. Because of all that I have just taken all my "wishlist" books out of my library and am keeping my own list.
I had the same thought about the gift cards - This appears to be a workaround to still get a net discount on agency titles.
It also appears that some of the RH imprints, such as Angry Robot/Osprey and Soho Press, are still being discounted. I don't know if this is temporary or what. These titles are all still available at Fictionwise, too.