Diablo Game Questions Make Transmog similar to wings and pets

Right now since I only play seasons, I have no reason to go and farm the cosmetic weapons and armour they added recently since they will just be gone again next season. I instantly did all the set dungeons for wings, farmed the falcon wings and pets since I won't lose them but going after the transmogs just seems like a waste of time.

I can't really think of any downside this. Maybe unlock all previously unlocked transmogs at 70 so we can still look ridiculous while leveling up?