The TCG is no More, but the Loot Lives On!
The World of WarCraft Trading Card game is no longer being produced, but the loot items will continue to be redeemable, and it's safe to say that certain loots will likely become more valuable than ever. Unless they decide to introduce randomized loot code rewards in HearthStone, the future of exclusive WoW loot will mainly be limited to the Blizzard store, and events such as BlizzCon. Apart from the Black Market Auction House, it's possible that the WoW TCG loot cards that are floating around right now may be the only way to grab ahold of these loots in the future.
Based on the announcements made at this year's BlizzCon, World of WarCraft looks like it's going to be around for some time. It's safe to say that some of these loot cards might actually be a good investment, if only to sell on the auction house at a later date for some serious in-game gold.