SilvaNews-1.0 bugs/questions

Hi Devs,
(actually Silva News developers)

Been playing around with SilvaNews-1.0 a bit, and I've noticed two bugs:
1) You can't add a "Silva News Publication" through the ZMI.  Not a big deal, 
but the option is there.
2) I am unable to add "Silva Folders" or "Silva Publications" underneath a 
news publication.  I get an error: AttributeError: is_version_published (tb 
at end of email).  Using zope 2.7.2-0 and silva-1.1

Also, I'm wondering what your thoughts are on how to managing the target 
audiences and subjects in large news systems.  Say my university wants very 
fine control of what authors can assign what audiences to a news item (which 
is very possible).  The only way to currently restrict that is to make sure 
editors catch it.  Say, for example, you have a set of audiences (possibly 
underneath a root audience) that you only want to assigned to news items 
underneath a certain news publication.  If you don't see that set of 
audiences in other news publications, there is no chance of an author/editor 
accidentally selecting or missing it.

Also, how do you suggest handling audience/subject name changes?  Are there 
plans to update news items when these change?  What if I want to display the 
audiences to the public?  If the service_news categories could have an 'id' 
and a 'title', the latter question would be easier to manage.  I've created 
an online newsletter system based on SilvaNews 0.9.3, and added titles to 
service_news so I could display nicer categories to the public and would be 
happy to share that with you.

I see two solution to the former question: either define in service_news what 
users have permissions to assign what categories (audiences/subjects), or 
have a SMI mgmt screen in Silva News Publications that allow you to define 
what categories/subjects can be assigned inside that publication.

Cheers,
Andy