A very useful extension of this plugin would be to allow redirects to different landing pages based on the path. On the UI side just allowing the current fields to be duplicated so that you can have groups of protected URLs redirect to a landing page related to this group that contains a login form. This could then be repeated for a separate category of protected resources.
I have a site right now that uses this module, but am having to uninstall and use conditional php tags in the preprocess functions to achieve this which is quite clunky and means the site users can't modify the behavior at all.
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