This would be handy to address the vast amounts of obfuscated releases that now seem to be posted (or at least the ones I am downloading)
There are options to rename the folder, but not the unrared name itself, so this might be a feature request rather than a help option.
rdl probably needs to let is know what is possible. I know at least one well known other binary newsreader that can do it, but it has to be configured in a certain way as it is part of the post processing scripts.