I don't like the idea of having skilling items/materials there. I'm fine with cosmetics as long as they remain tradable.
Loot bag, wilderness cape, edgeville tabs and various wilderness tabs would be a great addition. I'm not sure about Rune pouch (not ess pouch). I wouldn't mind it, but if it's too op, we shouldn't add it. Ess pouch doesn't belong here, it will most likely be obtainable from the outer ring of abyss.
I personally would love Charr's bounty idea, however Freestuffyay has a point. It would be easily abusable by richer players.
Imbue ring scrolls shouldn't be added into the shop imo, however I wouldn't mind, if they would stay tradable.