An update that could be added to version 1.5 is the jewelry store. As is done with potions and scrolls, they could occupy more jewels in a single slot, for example: 100 jewels in a single slot instead of a jewel by slot. And when refining an item, instead of refining one level at a time, it could be every 10 levels, for example: using up to 10 jewels at once to refine the item 10 levels.
I could agree specially when trading and upgrading would be more of a quality of life. Current one jewel until you stash is fine.