I wish that a chest exclusive for premium items exist (Premium hats, Cape, Nametag, Trophies and Chat Rings).
Since I played since launch, I have quite a bit of them, and a lot of space in my storage chest is used by them. Since they are equipment, you can't stack them. At the same time, you don't want to destroy them since they are collectors that can't be reobtained or it cost gems to reobtain them.
So a solution would be a specific storage chest where only premium items can be stored. So you won't have these items taking places in your main storage chest but you don't have to destroy them.