Minor Gameplay Change (items)

I don't know if this really matters to anyone else, its just a small something that I would like to see. Currently you can swap your items into different spots using the section shown on the bottom HUD next to your ability buttons. I think it would also be nice to be able to swap them around while in the store. Like I said not the biggest thing in the world, but so many times I have tried to move an item to a different item slot while purchasing in the store, it doesn't move, and then I remember that I can't. I don't really know, I just think it would be a nice simple change and it would make it easier to shop and move items around at the same time.