> The issue is whether or not a package should be mountable under
> other packages *other than* a subsite instance. None of the
> current packages have any functionality that makes that desirable.
Actually, unless I'm mistaken, I believe ETP uses this mechanism to support the notion of subtopics. So, for instance, if you could created the following structure:
Main ETP page
--> ETP News (subtopic)
--> ETP FAQ (subtopic)
in the sitemap, the News and FAQ subtopics would actually be subdirectories under the Main ETP page, but all 3 would be instances of the ETP application.
So, I believe there is good precedence for this very thing.