Would it be possible to have a way to make organized folders? I understand that parent and child posts exist, but they cannot be organized, and are generally more useful for images that have several variations that don't need to be in any order instead of sequential images that have a specific order to be looked at.

The feature that you're describing is already a feature within other booru software and I would definitely like to have it for Curveybooru.

The feature is called "Pools" and is available in the private Gelbooru Beta 0.2 build.
I have been considering creating a thread asking for development help with Curveybooru so we can have more features.