Personally I enjoy collecting Blizzcon cosmetics and there is one thing I’d love to see from this year’s Blizzcon virtual ticket.
Murloc onesie in WoW. Specifically this one:
https://i.imgur.com/X8Cv5RR.jpg
https://i.imgur.com/zcZZrEK.jpg
I love the Wendigo Woolies set from 2019 Blizzcon, but a murloc onesie transmog in WoW is what I must have in life.