Reset quest option for transmog.

For sure everyone who played here for some time came to a problem where you want to make new tmog but one of the pieces you miss is an item from a quest you did long time ago and you cannot receive the item anymore. This happened to me recently and I asked in tickets in game if they can reset quest but apparently they dont provide that service. So I came here to make it a suggestion to add an option to reset a quest with coins/points with a limited use per week/month so its not abused for gold or achievements but simply to receive a tmog item that you miss.
Thank you all for answers.

I think the faster and way more simple way is to fill a form to add specific item to coin/point shop.
There is a feature called "Missing an item? Let us know" or something similar. There you give a name of an item and suggest the approx price then wait if developers approve this or not.