I've implemented a custom provider for one of my clients. It displayed a folder structure with relevant assets in the RHS pane.
I am struggling a bit with implementing custom sort order for the folder list (not alphabetical)? Any idea what would be the best way to go about this?
Maybe you could use sort subpages on your container page and depending on the option there, the sort index of the child pages.
This is in the settings tab of a page