HI, I'm a friend of the OP Emberdreamweaver. She and I have the same questions.
We're both in the process of converting from ZIF to something else and we're trying to determine where we'd
want to build our new forums.
After looking at the feature list we saw PW protected forums are possible. We were relieved.
On the matter of Hidden Boards. What we're both looking for are boards that can only be accessed by the
site Admin via the Admin CP or Admin Section. These boards would not be seen on the home index page
and so, as admin, we would be able to see the same index page as our members. Plus, it makes our
home page a lot less cluttered. I don't remember how many hidden boards Ember has but I have four.
I hope this helps and further clarifies what we'd like to have.