Okay Dragonflight, I see dragonriding.
https://wowwiki-archive.fandom.com/wiki/Prince_Toreth This is Toreth, a character that probably not many folks know about, He’s a npc you meet ONCE for a quest in bloodmyst. But man does he have a story to tell and that I hope is wrapped up in dragonflight. TLDR however: He was once part of a great dragonriding civilization that Deathwing destroyed. He is now cursed to forever roam until they’ve returned. Basically, I think this could fit into dragonflight in SO MANY different ways- a green dragon mount in the preorder, we do have dragonriding(Which does look fun), the Dracthyr, and Ysera being possibly able to return- if elune wills it, not to mention Merithra. Basically there is every reason to let this ghost get a break.