The removal of content does feel pretty bad more often than it needs to. This is especially painful when the introduction of an “expansion,” things that are meant to add content, also remove content.
Turkeycat has a CC thread going with various different forms of removed content. It may be worth checking out their list and see if any suggestions should be made. I’m not sure if this was already posted, but I’ll link it again in case it wasn’t:
I will offer one (if you’re reading this feathery feline): The Brutosaur. As a part of its “removing from the vendor” announcement, it was also stated that the Bruto would remain obtainable in the BMAH. That hasn’t been the case for two years now and I am hoping we can get some visibility on this, whether it’s in your thread or perhaps a separate one. https://www.wowhead.com/item=163042/reins-of-the-mighty-caravan-brutosaur#comments has additional comments from others in the community about this as well. This shouldn’t be controversial since we were told by Blizzard it would be a part of the regular BMAH, but it was stealth removed two years ago.