Would like to see a function similar to how we can remove pets from our collection, cage them and put them on AH for Transmog and Mounts.
So basically if you have a full set you can remove it from collection and sell it on auction house or transfer it between accounts or battlenets (assuming its under your name). This would prevent dupes as it removes it entirely from collection just like pets.
Same thing for mounts, the ability to remove it from collection and convert it into a learnable mount again would be fantastic.
Maybe have it so, say you transmog run every week and you’ve farmed bloodfang on your rogue. You can package the entire transmog set into a learnable token and sell it on AH.
Your rogue would lose the appearance, but you would be able to sell the entire set appearance as a learnable token on AH.