Coppermine keeps permissions at the album level, but sometimes individual pictures need other permissions than the album. For example, if an album contains some restricted pictures, you will need to restrict access to all pictures in the album.
I'd like to keep the album level permissions, but then be able to make exceptions at the picture level. One way of implementing it, could be to give public pictures in restricted albums a specific keyword, and then have a public album that uses the album keyword to retrieve those pictures. In 1.4 this doesn't work.
However the opposite is possible in 1.4 - posting to a public album and then linking those pictures to the restricted album via the album key word. However, this requires a public album for each restricted album, which will result in too much duplication.