Description
Just like pools make posts in sets be able to be ordered. I'm not so proficient in coding and didn't see the site code but maybe it could work with almost copy paste of the implementation from pool to sets.
Why would it be useful?
Not everything has a generaly accepted order like a comic for example but many times a subjective one which would become possible with this feature to realize.
What part/s of the page/s would be affected?
set interface - you would have an order button at the bar and the ordering UI
Updated by Cinder