This is related to https://answers.atlassian.com/questions/16292, but there have been no satisfactory answers there for 3 1/2 years.
We have spaces which are restricted. They are NOT open to anonymous access, nor are they open to general groups like "confluence-users". When a non-authorized user accesses a Space like that, they get "You are not permitted to perform this operation", which isn't very helpful. Then they email me (the Confluence Admin), and i need to look up the Space owner and ask if the user can have access, RO or RW.
That's a big waste of time, for the users and for me!
How can I create an auto-updating page/macro/etc that lists all Spaces and who the Space Admins are? I know I could create it manually, but I'd like to avoid having that maintenance too, if possible.