We discussed that at the beginning, but the problem is that each provider has a very different understanding of folders + different concepts for permissions connected to that. This becomes difficult to deal with, if you want to e.g. implement a moveFile function for a provider. In addition once the folder path is part of the asset URL (I’m not sure this is the case for Cloudinary), your file-paths in the frontend might break easily if e.g. a folder is moved somewhere else.
I encourage you to open a feature request at https://feedback.strapi.io explaining your use-case. Requests on that board will be taken into account once we iterate on a feature.