I hope the Trading Post will one day feature the Moon-Touched Netherwhelp. It’s a pet I missed and I don’t think you can get it anymore? I see it used on certain try-hard teams because it is so unique and strong that there is really no replacement. I understand if it never happens, but…maybe it will show up someday? 
What pets from the past would you like to see brought to the trading post at some point?
I made a list of all no-longer-available and past promotional pets that could be good additions to the Trading Post. I’d be happy with any of these, even if I already own some of them 
I recently added the Gryphon Hatchling and Wind Rider Cub (how could I have forgotten about them?!) because it seems a little unfair that we never got any kind of closure with those. (I don’t think Blizzard ever clarified if/when the BlizzStore would get restocked with those plushies that came with pet codes, and at this point, it’s obvious that they won’t.)
At least with the Gryphon Hatchling you can tame a wild equivalent. Have always been puzzled why there was never a wild version of the Wind Rider Cub too.
Just taking a look through the list you have compiled I can see another discontinued pet that you seem to have missed in your current list. That pet being the Thundering Serpent Hatchling which was originally connected to a guild achievement and guild vendor but has been removed and is no longer purchasable in game.
It supposedly can appear on the Black Market Auction House but it hasn’t appeared as an item for a very long time either.
Yea, I didn’t add that one since it’s supposed to be a BMAH item now (and not just a random drop from the BMAH containers). Kinda frustrating that it hasn’t appeared on there more often.
I’ll probably end up adding it to the list eventually.
The Thundering Serpent Hatchling is actually up on my server’s BMAH today. First time I have seen it on my BMAH that I can remember.
