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How do sites that use a file manager such as IMCE or the file managers built into WYSIWYG editors configure the directory path settings? We're evaluating IMCE (using FCKEditor as an editor) and are not comfortable with storing uploaded files such as images embedded in pages or media/PDFs that are linked from pages in directories that incorporate user IDs, since we anticipate that a given node may very well have its owner changed in the future (use case: subject librarians change departmental responsibility). Do you put all uploaded files in one big folder? Do you have the file manager create a directory for all of a given user's files?

A node-ID based directory structure may make sense (e.g., all the files referenced in a given node are stored in a directory whose name is based on the node ID), but IMCE and the other file mangers we've looked at don't support this. This approach is not without its problems either; http://drupal.org/node/161735 discusses some issues with using node IDs.

Any advice/experience/warnings would be appreciated.