I would really appreciate it if auto-arrange was able to be turned off.
Sometimes it is very handy to manually arrange files into visual sub-categories within a fence. So that you don't go crazy with multiple fences.
E.g. On windows desktop, before Fences, I would make rows or columns relating to the sub-category of around 2-5 files, but grouped with other files/ icons in the same 'master-category'.
Bascially it would be handy to allow a way to create more than one level of heirarchy with Fences.