I ran into a situation where I wanted to propose Axure as a tool to a larger organization. Only problem is that they don't allow freewheeling access to shared drives -- they lock everything down and force collaboration through Subversion, Sharepoint, etc. This is typical in larger enterprises with tight security restrictions.
Axure may want to consider providing an option where the sharing is done in an *existing* Subversion repository to address this.
Similar situations occur with consultants who collaborate with their clients. They can access a shared SVN repository but not shared drives.
I'm guessing that, with a little work, you could trick Axure into using an existing repository but a user-friendly way to do this would be very handy.