Easy sorting of products within a category

Vote for his! :-)
The ordering of categories is easy to change by selecting a category and using the up or down arrow buttons. I really wish you would implement the same feature for sorting products within a category. We need that often when we want to change the order in which products are displayed in the webshop frontend. E.g. to move promotional products up and sold out products down in the list.
It looks like an uncomplicated feature to implement?

BR /Sten