right now we don't have password entry to forums - they are either MBA or they have restrictions and exceptions (eg, you can set a forum to be closed to all members until they achieve a certain level - 100 posts, or 12 months membership, etc.) We also have invisible forums of course. Unless your community has an aching need to give access to a forum based solely on them having a password, then I would say that the security setup is ready for you to move over now. Passwords are specced up for the next round of member managment updates however.