Paperpile should sort folders and subfolders automatically (0-9, then a-z; possibly, with consideration to non-Latin scripts as well as scripts that use extended Latin character sets).
Additionally, it would be great to be able to set order (for shared folders), for example using URL parametres (sort by name, sort by date of last update, sort by size - ascending, descending).
@William_Mair Yes it seems folders with numbers are still sorted based on their Ascii value not their numeric value. It seems we fixed something else the original poster reported as his examples seem to be sorted correctly (https://paperpile.com/shared/1FysXR)