Password Protection Option
A new level of security, password protection, could be created. It would be similar to the <a href="http://en.wordpress.com/features/
Sometimes, users might want someone who doesn't have a Dreamwidth account to see a post. This person might have a low level of internet know-how, or not want to go through the trouble of using openID to simply see one post. (Or, it could be a group of persons, meaning that it might be inconvenient to add them all)
Or, if this person has a Dreamwidth or openID account, the user might not want to grant them access because it would mean that they could see all of the user's access-locked posts on the Default Access List level of security.
In terms of feeds or crossposts, the post would be replaced with a link to the Dreamwidth entry (since LJ doesn't allow for passwording). Comments would also not be visible.
In terms of the posting interface, I think it could be placed under security options after Custom Filters. If selected, there would appear a box where the poster could type in the password. Password-protected posts would be public (I'm not sure there is much use in them being Access-locked).
Should be implemented as-is.
Should be implemented with changes. (please comment)
Shouldn't be implemented.
(I have no opinion)
(Other: please comment)